Aiki

愛気

Kunitoshi Joukyuu is a master of aikido and arguably the strongest fighter alive, except his own father once dislocated and reset every joint in his body in a single night to cap him at half his strength. Lazy and loose with his morals, Joukyuu is dragged into service when two muscular female instructors beg him to train their young mistress, the small, raven-haired Kizuki. He grudgingly drills a growing circle of women into capable martial artists while hunting for a way to undo the lock on his real power.