Koushi Inuzuka is a high school student with aspirations of becoming a public prosecutor. However, he was born into a family of martial artists led by his violent father. As an infant, his father arranged his marriage to the daughter of his rival turned friend to unite the two martial arts bloodlines and create the strongest clan on Earth. Fast forward to high school and Koushi is unaware of the arranged marriage. He meets Momoko Kuzuryuu, a martial arts artist who claims to be his bride and desires sexual intercourse. Koushi, uninterested and seeing her as a little sister, refuses her advances. Meanwhile, a war breaks out between martial arts families, leading to numerous fighters targeting Koushi. He also suffers from a fight phobia due to a past trauma. Momoko, with her superior fighting skills, protects Koushi as they navigate the challenges ahead. Will they survive, and will Momoko convince Koushi to have a baby with her?