START-402 After a cocktail party, I had a one-night stand with a colleague I didn't particularly like. My penis penetrated deep into her vagina, giving me the greatest orgasm of my life… Despite not liking her at all, I had sex with her again and again. Honjo Rin - Honjo Rin

Rin and Yuya, colleagues with completely opposite work styles, always seem to clash. One evening, Rin misses the last bus after a business dinner with a client and is forced to spend the night at Yuya's house, where Yuya is also home. While drinking, the conversation shifts from work to vulgar topics… Just as they become agitated and begin hurling insults at each other, something unexpected happens: “Since you put it that way, why don’t we give it a try!?”