Kotaro Lives Alone is a Japanese manga series written and illustrated by Mami Tsumura. The manga series has been adapted into Netflix original net animation and anime series. The Story of Kotaro Lives Alone revolves around Kotaro Sato, a small boy that moves into the apartment right next to manga artist Shin Karino. Kotaro is visibly neglected and abused by his father. Kotaro spends most of his time alone and the series heavily revolves around themes of child neglect and abuse.