義理の妹と結婚したい

Yaiichi, born as the eldest son of the wealthy Shibainu family, was encouraged by his strict father to have an arranged marriage meeting. His prospective partner was the daughter of a financial conglomerate, and she was ideal in both appearance and personality.

After meeting Kana and starting a relationship with the intention of marriage, they eventually became engaged. However, this was the beginning of a nightmare. Yaiichi believed their feelings were mutual, but he was mistaken. One day, upon returning home from an outing, he witnessed Kana with an unfamiliar man.

The engagement was called off.

Despairing, Yaiichi was about to throw himself off the cliffs of Tojinbo. However, he encountered a girl who was about to jump before him. Yaiichi saved her, marking the beginning of a destined encounter.