The Devil Does Exist (manga)

Kayano's dad died several years ago. Her mom is dating and tells Kayano she is thinking of marrying a divorced man who has a son, and Kayano is happy for her. It turns out that this man is her school principal, and his son, Takeru, is a major troublemaker who turns Kayano's life upside down.

Volume 1

Volume 2

Volume 3

Volume 4

Volume 5

Volume 6

Volume 7

Volume 8

Volume 9

Volume 10

Volume 11