Synopsis: Chiku Bingo

Kishiwada is widely recognized as the school's number one delinquent. But, despite being the leader of a gang, he's hiding an important secret... which is... he has extremely sensitive nipples! They get erect from the slightest touch from the fabric of his clothes. Not only that... even his rod gets hard from it! Due to this, his everyday life is filled with troubles! The reason for this peculiar condition is that when he was a kid, he used to play a game called "Nipple Bingo" with his friend Andoh... And one day, Andoh suddenly reappears in Kishiwada's life!