Nida is a single mother who takes care of her anti-social son who has locked himself in his room for five years. The only way to communicate with her son is to write on a piece of paper and slip it under the door. But, when outsiders start to get curious about what is going on behind the door of her son's room, a series of terrible events starts to happen.

After learning an online friend is considering suicide, Makoto, a young non-binary hikikomori, must try to save her while remaining trapped at home due to fear of the outside world.

It's estimated over a million Japanese live as "hikikomori," recluses totally withdrawn from society. Some hikikomori may even go for decades without leaving their house. While in the past the phenomenon was most commonly associated with young men, recent data has revealed a much wider demographic of people whose confidence in themselves, and in society, has been shattered. As the parents or relatives hikikomori so often depend on entirely become too old to care for them, many now face a dire situation, left alone and unable to cope.

A battered young girl finds refuge in a mysterious button, with unprecedented consequences....

Hyun-dong is a hikikomori. He lives off of the joy of assembling and displaying Gundams in his only space, his home. Then one day, he makes a big decision to go out to buy a Gundam plastic model that a delivery man left next to his door. At that moment, the front door slams shut. He is trapped in an unfamiliar world, he can't remember the password and he decides to go on a long journey to find the key house.

Etsuro Kurosu faills getting into a university and becomes a hikikomori. One day, he tries to hang himself from a hook on the wall in his apartment. He fails, but his attempt leaves a hole in the wall. Through the hole wall, Etsuro Kurosu can now see Rio Miyaichi. He becomes fascinated with the girl that lives next door. Later, while peeping at her through the wall, Etsuro Kurosu sees her in the process of brutally murdering someone. He screams and is caught by her. Etsuro Kurosu confesses that he loves her and they start to date. Etsuro Kurosu feels happiness in his life, but what will happen to him? Will he be murdered by Rio Miyaichi?

Mentari's death forces the estranged siblings to reunite under Langit's care. Amidst their respective conflicts and wounds, they learn to accept their loss and rediscover the meaning of family.

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For Yasuko every day is a challenge. Due to her mental illness and hypersomnia, simple things like household chores and holding a job seem impossible. Added to the mix is an indifferent, almost distant boyfriend and an ex-girlfriend with plans to win him back.

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An anime-obsessed young man fantasizes about his favorite voluptuous heroines, but his sex-addled dream quickly transforms into a nightmare which threatens to consume him.

A calm, empathetic documentary film about hikikomori—mostly young, male social recluses in Japan—and their way back into society through the help of institutions. The film very unobtrusively tries to find out about its protagonists' motives for withdrawing from society and gives an interesting and insightful glimpse into this cultural phenomenon.