He meets psychotherapist Riku Kurose, who recommends exposure and response prevention therapy and instructs Shirotani to write a list of ten actions he is unable to do: Kurose tells Shirotani he will be cured once he completes the items on the list.

Shirotani nevertheless wishes to continue their sessions, and they resume therapy while simultaneously initiating a sexual relationship.

Through a flashback, it transpires that the root cause of Shirotani's mysophobia is a childhood trauma of witnessing his father having sex: the self-loathing he experienced after becoming aroused by the sight of his father, combined with the shame of being caught masturbating to the incident, prompted him to associate physical contact and intimacy with feelings of disgust.

Shirotani reveals the tenth item on his list – to be patted on the head, an act he associates with his father – and admits that he loves Kurose.

[18] The game also introduced new original characters, Shiki Natsuya and Masaya Fuwa, who are voiced by Yoshitsugu Matsuoka and Takuya Sato.

[21] On August 1, 2018, a puzzle game for iOS and Android titled Ten Count for App React was announced and scheduled for a fall release, with all four main characters returning.

The film was to be written and directed by So Toyama, with character designs handled by Tomomi Shimazaki, and was set to premiere in 2023.