Tongari Thanatos

Moroha, a high school student from Chiba, moves to the countryside and finds it difficult to adapt. As he begins to lose hope in the typical experiences of youth and love, a strange bump appears on his head, which his younger sister names "Thanatos." The emergence of this bump appears to be linked to Moroha's growing interest in Eriko, the girl who sits beside him in class. However, several individuals are determined to prevent Moroha from getting close to her.