Sumire, a female boss who easily loses her temper when teased, is teased by Ikeda, who says, "Senior, you seem to be a weak drinker, don't you?" and she goes out drinking, saying, "There's no way I can't drink more than you, right?" At the drinking party, Ikeda teases her, saying, "Senior, you seem like you'll come easily, don't you? I'll come before me," and she gets angry, saying, "Than you? No way," and ends up having sex with Ikeda.