Shota was playing a game where he gave a score to the buttocks of women who passed in front of him. One day, a buttock that was a perfect 100 points passed by. He quickly chased after it, and ended up going into the owner's front door. The girl's name was Nao. Shota couldn't contain his excitement at the tight buttocks of the sports-loving Nao, so he started to approach her buttocks!