Yuu Aoba works as a receptionist at a sexually transmitted disease clinic. Her cute appearance is the type that easily stirs a man's desire. The fact that she's working in an STD clinic is, in itself, strangely arousing. She's introduced as a very chaste individual who undergoes regular health checkups. However, the fact that she gets tested regularly might also spark suspicion about whether she's involved with multiple partners. Contrary to her pure and innocent looks, she shows a surprisingly active side when it comes to sex. When handed a vibrator, she smiles cheerfully, her lower body visibly twitching with anticipation. She doesn't resist at all when the vibrator is applied to her breasts—her erotic nature shines through clearly. Though she claims to live a reclusive, stay-at-home lifestyle, with such a horny reaction, she should definitely get out more and bring pleasure to men everywhere.