Shinichi is the only son of Takako Gotenji, the strongest female fighter in Japan. Despite this, he is not very good at seeing people get hurt, and he would never be interested in martial arts! He has made up his mind that he will never follow in the footsteps of the dojo. Then suddenly five beautiful girls appear in front of Shinichi. They are the strong fighting girls who have been scouted as the heirs to the dojo! But in fact, they are all potential brides for Shinichi, and the only condition for marriage is that they have to squeeze his penis...?