Shion's mother remarries Ginji, the president of a mid-sized company. To celebrate Shion's university admission, they decide to travel to a hot spring resort. During dinner, the stepfather intentionally makes Shion's mother drunk, causing her to retire to the bedroom early. Shion intends to go with her mother but is detained by Ginji. He wants to teach her love lessons so she won't be deceived in life.SSIS-029 Stepfather seduces his wife's daughter However, he not only teaches but also wants to practice with her. Despite wanting to resist, Ginji threatens to end their relationship with both Shion and her mother if she refuses, forcing them into a life of hardship. Out of love for her mother, Shion reluctantly endures and obeys her stepfather's words. Little did she know, the mother she dearly loved had promised to give her to him from the start, so he could repay debts and provide a prosperous life for them both...
