Osamake - Knowledge

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make him notice her. She gives him support and convinces him to start being friendlier with her. As she leaves, an eavesdropping Shida confronts her, as the two girls stake their claims to win Maru. He and Shida proceed to walk around the festival, as she tearfully breaks off their "relationship" giving him the push to make his own choice. During the closing ceremony, Abe puts on a song and dance routine for Kachi, which Maru arrives and upstages. As he's about to confess his feelings to Kachi, he instead reveals his initial plans for revenge and that while he did love her, he confesses to Shida instead, who he realizes had always been there for him, shocking Shida and devastating Kachi. However, to everyone's surprise, Shida happily rejects him. Afterwards, Maru's friend Kai and Abe discuss how Abe was playing "the bad guy" as Kachi's fake boyfriend as part of her ploy to get Maru to confess to her. They also figure out that Shida only rejected Maru as revenge for herself being rejected and regrets it, as the two lament that everyone lost. Meanwhile, a girl watches a video of the performance on her phone, recognizing Maru.

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closer to Maru. At the same time, Kachi's maid, Shion Oragi, tells Maru that Shida is only doing everything out of a "sense of respect" and not to get any ideas. Momosaka starts her first day at their school, where she uses all her free time flirting with Maru, causing all the boys to get jealous, and Kachi to get annoyed. Kachi proceeds to feed him during lunch, causing him to feel confused based on Oragi's comments; he chats with Shida on the roof as they start to reconcile. Kai reveals to the Ultramarine Alliance they've received an offer for a documentary series about Maru's life since his disappearance. Shida is unsure, but Kai convinces Maru asking if he wants to get closure on his own merits. He devises a plan to compromise, having the Alliance produce the documentary themselves, as well as throwing in Maru filming a new version of the final scene of his previous drama, Child King, which he accepts. Sometime later, the girls meet up to discuss putting up boundaries so they can't openly flirt with Maru, while also scheming a way to get closer to him through the documentary.

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flustered. However, when they later work on their study sessions, Maru realizes the extra work that Shida put into the assignment for him, and starts to appreciate her more. While setting up the stage for the girls' performance, Akane voices her confused feelings for seeing Maru with so many other girls. Later that night, Maru spots Kachi practicing for the dance, despite a slightly sprained ankle she got earlier, as he cheers her on to succeed. At the same time, Akane spies on them, which Aoi realizes is because she has started to develop a crush on Maru, which she has been trying to prevent for herself to avoid the pain. The next day, the girls put on their successful performance. When Kachi nearly falls off the stage, Maru saves her, though resulting in him breaking his arm. Back at school, Abe meets up with Kai to discuss the ongoing developments, with the latter surmising that Kachi is currently in the lead, due to being the type of girl Maru likes. Maru learns that Kachi and her maid will be moving in to take care of him, to Shida's discomfort.

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he can. Shida herself tells him that she wants to start over so she can rebuild their trust. Kachi then arrives to give the two a ride, and sensing Shida's jealousy, believes she's faking the amnesia, so Maru comes up with a plan to test it. At lunch, he feeds her a bento with octopus wieners, as a traumatic incident in their past made it so that she's sensitive to certain tastes, however she proceeds to eat it no problem. As the two discuss about Maru potentially going back into acting, Kachi and Kai barge in to offer their own opinions. Kai reveals that he wants to start producing videos with his entertainment club, with Kachi writing scripts, and tries to convince Maru to accept. To decide what he wants, he goes to visit the agency, with Shida, Kachi, Kai, and Momosaka accompanying him. The President, Shun Hardy, tempts them with an over hundred million dollar deal, however Shida still declines the offer. As Hardy continues to insist she take the deal and proceeds to insult her over it, Maru retaliates pouring a bottle of wine over him.

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the school's upcoming festival. Maru decides the best way to upstage him is for their class to put on a play for the festival, which he manages to convince Kachi to write, even as Shida surprisingly reveals their "relationship" to the class. While practicing, Maru suddenly hyperventilates and passes out. He awakens with Kachi watching over him, and when she reveals she knows he used to be an actor and asks why he quit, he reveals that after his mother died in an accident on-set, their series was eventually put on hiatus and he grew traumatized and left the scene. Kachi later proceeds to reflect on everything, unveiling that she and Maru used to be friends when they were younger, with her known to him as "Shiro", as her father was Maru's co-star, and that it was Maru who convinced her to keep writing. However, after the show was cancelled, they couldn't see each other anymore, so Kachi grew bitter and devoted herself to becoming a great writer as revenge for leaving her, as it turns out that just like it is for him, he is her first love.

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and when it was she started to fall for him. She takes him to an old hiding spot that he used to go to as they reminisce on their good memories. Shida confesses her love to Maru again, as well as revealing she rejected him as revenge for being rejected initially, which Maru is finally happy to hear the reasoning. However, when she asks for his answer, he is unable to respond right away, due to the lingering feelings he has for Kachi and Momosaka. Before he can answer, Shida stops, realizing his thoughts, and instead proposes she becomes his "childhood girlfriend", a promise that they'll remain as close as they want to each other, while still leaving things open if their feelings change in any way. After the documentary is released, Abe goes to visit Kai once again, where he reveals all of the girl's scheming and Shida's plan, with Abe surmising Kai "won" out in the end. Later, Maru learns that there is a fan club for him formed in the school, which he is bashful about, all the while the girls plan to not let them get in their way.

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popular actress who he acted as a mentor to, who expresses her happiness to see him again, to Kachi and Shida's irritation. Kai later introduces Maru to Rena Asagi, a first-year and old friend of his who's incredibly helpful to them. Kachi arrives appearing to ask Maru out, only for her friend, Meiko Mine, to clarify her father wants to see him again after hearing about his supposed return to acting. Just as Shida re-appears, still traumatized over the rejection, Maru retreats into himself hiding behind Kachi, forcing Shida to tearfully leave. Both Maru and Shida are supported by Kai separately as they try to decide what they want. Maru arrives home to find Momosaka already there, having made dinner and reveals that their agency, now run by the previous head's son, wants to convince Maru to return to acting, as well as Shida too. Just then, Shida's siblings suddenly appear, telling Maru that Shida has amnesia.

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suggests having each of the girls interview him, since they all have some connection to his past. Kachi starts first, inviting him to her home, where they end up reminiscing on their old friendship, and how Maru helped her get over her nervousness, ending with the two going on a date to Tokyo Tower. The following day, Momosaka takes her turn, where she takes him to the place his mother had died, in order for him to reconcile his feelings over the incident; she intends to use this opportunity for her to support him in his lowest moment. However, after he explains his lonely feelings after her death, Momosaka breaks down, due to her own love for his mother and her regret over nasty words she said to him back then. This leads to Maru, who initially felt like he couldn't cry, start to tear up as the two embrace each other.

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group arrive to Kachi's family's villa where they start to relax. Meanwhile, Shida attempts to hold back her jealously, imagining how close the other girls could be getting to Maru. He later gets a text from Kachi to see her privately at a separate corner of the beach, where she seductively shows off her swimsuit. The rest of the group proceed to spy on them and stop them before they go too far. Kachi attempts to practice their dance routine but runs into some trouble. That night, Kachi dejectedly returns to the beach, where she is comforted by Maru as she discusses about everything she is anxious about. The two nearly kiss, until Maru remembers Aoi's words and stops. The next morning, Maru awakens greeted by Shida and her sisters.

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memories"; the girls initially reject the idea of filming their swimsuits but reluctantly give in when that's axed. Due to having to watch her sisters, Shida has to come with them the following day. Later that night, Aoi arrives to help out Maru, where she gives him advice warning him about the "magic of travel" and trying to hook up with someone in that environment. After Kachi checks back in with Kai, it is revealed that Rena is Kai's half-sister, who wants to keep their familial connection a secret. The group, plus Momosaka's sister, Eri, prepare for the trip as Kachi and Momosaka argue about each other's cooking abilities and decide to have a competition.

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want, but if they lose Maru has to join the agency. Momosaka decides to act in the agency's commercial to show off to Maru how much she's grown. Despite some initial doubts, the Ultramarine Alliance ends up winning the competition, and Maru decides to stick with them. Meanwhile, it is revealed that Shun is Kai's father, and that he started the Alliance/initially became friends with Maru just to get revenge on him. After having also escaped the contract at the agency, Momosaka transfers into Maru's class, to Shida and Kachi's annoyance. Later that night, Maru catches Shida in a lie, confirming she faked her amnesia.

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that Kachi is in a relationship with Mitsuru Abe, causing him to fall into a depression. Shida arrives to cheer him up, and helps to convince him to get revenge on Kachi and Abe by starting a fake relationship with her in order to make Kachi jealous and upstage them; all the while Shida uses this opportunity to get closer to Maru and get him to eventually fall for her. Maru meanwhile tries to dig up dirt on Abe, but is unsuccessful, as he is confronted by the man himself, who reveals he knows Maru used to be a child actor.

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first love, Shirokusa Kachi, who is a beautiful idol and an award-winning author in school. Shirokusa is indifferent to all boys in school but Sueharu, which makes Sueharu think that he might have a chance. When Sueharu decides to confess his feelings, he is devastated to find out that Shirokusa already has a boyfriend. Kuroha approaches Sueharu, offering to help him get revenge on Shirokusa and her boyfriend. However it turns out that Shirokusa also has feelings for Suehara.

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The group learn that several tabloids have started printing out stories based on Maru's past, which Kai believes Shun Hardy to be responsible. Despite this, they all still persist to move forward with the documentary and the true ending, which Kai reveals is now backed by "Collect Japan TV". Momosaka

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After Momosaka messes around with Maru and the Shida siblings a bit before leaving, the sisters reveal that Shida has supposedly lost all of her memories since her initial confession to Maru. Despite still being hard for him to get closer to her after the rejection, he resolves to help her in any way

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At the start of the confession festival, Kachi, disguised as "Shiro", visits Maru, who's happy to see "him" again. After she discovers he still remembers his promise to act in one of her works, Kachi unveils herself, revealing that she had felt jealous over him always being around Shida and wanted to

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After revealing he knows that Maru used to be a famous child actor and star of a popular soap opera, Abe continues that he inspired him to enter acting, and that his relationship with Kachi is all part of a ploy to get revenge on him after learning he liked her, planning to formally confess to her at

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A former child actor. He is traumatized by his mother's death and quits acting at the peak of his fame, becoming a regular high school student at the beginning of the series. Despite his acting prowess, he is easy to read and is relatively naive when it comes to romance, making him highly susceptible

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After returning home, Momosaka continues to stake her claim on Maru. Back at school, Kai reveals that due to the other actors from Child King having retired, Shida and Kachi will be acting alongside Maru and Momosaka in the true ending. Shida walks home with Maru as she reflects on her life with him

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Sueharu Maru falls for classmate, school idol, and award-winning novelist Shirokusa Kachi, and they develop a friendship. He is also childhood friends with the other school idol, Kuroha Shida, who had confessed to him recently but was turned down due to his feelings for Kachi. In class, he overhears

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An award-winning novelist and Sueharu's first love. When Sueharu entered high school, he did not recognize her at first as she had a boyish appearance as a child. She is renowned as a "cool beauty" at school due to her fame, demeanor, intelligence, and looks. Despite being cold and aloof toward most

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After they decide to have the competition be a hot pot, Kachi is depressed as she's not good with hot pots and wanted to make fried chicken, Maru's favourite food, instead. Overhearing Maru and Kai discussing his feelings for Kachi and Shida, Momosaka tries to plan a way for her to get closer. The

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Maru and Shida get into a fight over Shida lying to him about the amnesia, and Maru's inability to figure out why she did it in the first place. At the same time, Kachi schemes with Kai to get ahead in the "race". At the Ultramarine Alliance, the boys suggest a trip to Okinawa to have some "summer

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After Hardy threatens to report them to the police, Kachi's father and Momosaka manage to compromise by suggesting a competition. Both the agency and Maru's group, the Ultramarine Alliance, will produce a commercial for the pharmaceutical company, and if the Alliance wins they can do whatever they

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The sisters arrive as Maru and Shida continue to act antagonistic towards each other. She decides to confront him, and still refusing to forgive her until she apologizes, she goes for a more proactive approach constantly saying "I love you" to him throughout the day, causing Maru to be annoyingly

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Maru continues to feel distressed over the confession failure, while the girls also distress over how everything turned out. Maru also learns Kai uploaded the video of his performance and confession, which has gone viral to his further annoyance. He's surprised by the arrival of Maria Momosaka, a

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Sueharu Maru is a seventeen-year-old high school boy who has never had a girlfriend. He lives next door to his childhood friend Kuroha Shida, a small and cute Onee-san type of girl with an outgoing character. One day, Kuroha confesses to Sueharu, but he rejects her; Sueharu only has eyes for his

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Shida and Momosaka attempt to spend the night at Maru's place alongside Kachi, but don't receive permission from their parents. Aoi and Akane also start to keep their distance from Maru, to his disappointment. As they all leave, Kachi declares to Shida her intention to use this situation to get

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Sueharu's childhood friend who lives next door to him. As the eldest of four sisters, she has a tendency to look after others and is socially adept. Although she wishes for Sueharu's happiness, she also knows him better than anyone else and doesn't hesitate to use that to her

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performed the series' ending theme song "Senryakuteki de Yosō Funō na Love Comedy no Ending Tema Kyoku" (lit. "An Ending Theme Song for a Tactically Unpredictable Romantic Comedy").

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Shirokusa's maid who has lived with her family for years. Because of this, she and Shirokusa have a sister-like relationship. She is also classmates with Sueharu.

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and directed by Takashi Naoya, with Yoriko Tomita handling series' composition. Naoya also designed the characters. It aired from April 14 to June 30, 2021, on

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Sueharu's close friend. He enjoys watching Sueharu react to various events and often orchestrates things behind the scenes.

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has licensed the series in Southeast Asia and South Asia, and will stream it on their Muse Asia YouTube channel and

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Osananajimi ga Zettai ni Makenai Love Come: Otonari no Yon-shimai ga Zettai ni Honobono suru Nichijō

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Osananajimi ga Zettai ni Makenai Rabu Kome: Otonari no Yon-shimai ga Zettai ni Honobono suru Nichijō

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television series adaptation was announced on October 3, 2020. The series was animated by

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imprint since June 2019. A total of twelve volumes have been released as of March 2024.

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Shirokusa's fake boyfriend. He is a big fan of Sueharu when Sueharu was the child actor.

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of her male classmates, she acts friendly around Sueharu after he praises her writing.

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First light novel volume cover featuring Sueharu Maru (left) and Kuroha Shida (right)

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Kuroha's next younger sister. She is the tallest in four sisters of Shida family.

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performed the series' opening theme song "Chance! & Revenge!", while

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The series is written by Shūichi Nimaru and illustrated by Ui Shigure.

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