As a graduate student, Souichi Tatsumi portrays aggressive, domineering behavior and displays homophobia. Interestingly, despite these negative traits, Tatsumi's physical attributes - his posterior and crotch - attract the attention of homosexual individuals. This creates a problematic situation for both Tatsumi and his lab assistant and underclassman, Tetsuhiro Morinaga. Despite the risks involved, Morinaga has developed strong feelings for Tatsumi's body and desires to confess his love. However, given Tatsumi's hostile personality, Morinaga has a better chance of winning the lottery than of receiving any sort of affection in return.
