Goku Yome Nanka ni Narimasen!

She was supposed to have a normal marriage and a normal family! But... the man who forces her to marry him is... a gangster!　
Rikako Sasada, a new teacher, is actually the daughter of a gangster. She has kept her distance from the gang and leads a normal life, but...her father suddenly appears and makes a selfish proposal of marriage, citing the escalation of the war. She refuses the proposal, but is in trouble when she is kidnapped by a rival gang... and the kidnapper is Ryuzaki, a student at her school! Ryuzaki is the son of a warring yakuza. In order to settle the war, he is asked to marry...