A masochistic family's wife

Mako ends up marrying her son, who was introduced by her boss at work. However, he actually had a crush on his boss, Tetsuzo. Mako, who is serious and unable to refuse, ends up getting married without expressing her feelings to Tetsuzo, ends up having a relationship of "father-in-law" and "daughter." Mako, who can't forget her feelings for Tetsuzo, is unable to make a good relationship with her husband and has never had sex since she got married. Meanwhile, Mako is decided to live with her husband's family and finds out the twisted secrets of her family...