
S01E01 Arrival of the Rookie Teacher With a Secret!!
Kumiko Yamaguchi, the 23 year old granddaughter of a yakuza boss, becomes a teacher at Shirokin Gakuen, an all boys high school.
Kumiko learns that Shin's father is going to have him drop out of school and once she learns why, Kumiko decides to try and get Shin to stay in school.
Kumiko "Yankumi" Yamaguchi enters Shirokin Gakuen Private School to become a math teacher. She's assigned as the homeroom teacher for class 2-4, populated by a gang of delinquents. At first, the class tries everything to rattle her cage, but to no avail. In a short period of time, Yankumi gains the respect of the class. But what the school doesn't know is that she's the heir to the Oedo Group, a powerful Yakuza clan. So while Yankumi struggles to excel in her career as a teacher, she must also keep her Yakuza background a secret.