Ume is just an ordinary teacher, living a full life surrounded by her adorable students. She is secretly in love with her colleague, Mr. Sakura, until one day her innocence causes a misunderstanding! She is brought to the Sakura Group's mansion... where she finds out that sweet man she loved is actually in the yakuza! What's worse, he chooses her to "be his woman!" Mr. Sakura ties Ume up, making her his... Right when things seemed like they were getting better, she learns that her student Fuji is also in the yakuza... Just how many are there at this school!?

from Renta!