The mistress is wearing a sailor uniform.

The hairstyle “Seiko-chan Cut” really suits her well. There’s also a popular series called “Seiko’s Thighs” based on this story. It’s directed by Terashima Mayumi. A war breaks out between yakuza groups in Tokyo and Kyushu! Ishinari Akiko elopes with a teacher from a certain school and moves from Kagoshima to Tokyo. But the teacher gets kidnapped by a female leader of the yakuza group. In reality, Akiko is the daughter of the successor of the Kyushu yakuza group. She decides to take matters into her own hands!