Sumomomo Momomo Vol. 1 (manga)

Koushi Inuzuka is heir to an ancient family tradition of powerful bushido martial arts. Unfortunately for his father, Koushi wants absolutely nothing to do with such dangerous things. His goal is to become an avenging prosecuting attorney, turning him into a bookworm that his father simply can't understand. Still, Koushi finds a great deal of comfort both in his studies and in the structure of law.

Until the day that Momoko Kuzuryu, daughter of another great house, drops into his life and demands that he, the last scion of the strongest family of bushido martial arts, sire a baby with her.