With the assignment due in two days, art student Yumi (虹村ゆみ) panics. The theme turns out to be 'nude figure drawing'. Unable to secure a model, she reluctantly asks her father and brother for help. "I'll do it!" "No way, I won't lose to Dad!" As father and son compete, they strip off their clothes one after another, and the desperate Kihō is eventually asked, "Who should I draw?" Reluctantly Yumi chooses her brother, but in the middle of the sketch the brother suddenly becomes aroused!? Kihō is bewildered.
