This episode provides a detailed account of a conflict between the author and an acquaintance. Despite the acquaintance’s difficult personality—manifested in problematic behaviors such as arguing with his wife in public, lodging frequent complaints with customer service representatives, and even facing arrest—the author maintained the friendship for personal gain. However, their relationship ultimately collapsed following a misunderstanding involving the acquaintance’s son and the author’s daughter. The acquaintance posted a photo of the author’s daughter on social media without permission and made defamatory remarks about the author’s developmental disability. Through this experience, the author became acutely aware of Japanese society’s limited understanding of developmental disorders and the oppressive nature of the cultural emphasis on “effort” as a moral virtue.