Mari is shy around men, and only had one boyfriend in college, to whom she gave her virginity, but the relationship quickly broke up. Eight years later, she no longer knows how to fall in love, and Yoshimura, a senior at her company, is someone she admires. She was supposed to be satisfied with just having feelings for him, but one day, after a company party, she gets drunk and they end up spending the night together...?! *Included in "Let's make it an unforgettable night."