Voiced by: Rie TakahashiA girl with long bangs who aggressively pursues her teacher, eventually beginning a relationship with him after graduating from high school.
Sore Loser: Ai-chan is super competitive, and has a slight tendency to use her assets (sometimes literally) to one-up the salaryman, be it in card games or air hockey. Sibling Yin-Yang: While she is calm and polite, Ai-chan's little sister is a Genki Girl. Sex Dressed: At one point, she answers the door this way with her shirt undone at the top and the bottom, leaving it up to your imagination what exactly she and Onii-san were doing. #Tawawa on monday ehentai series
Series Mascot: She will usually be the frontmost girl in advertisements, and takes the majority of focus in the net anime. By contrast, the girls hated her for her popularity with the boys and her big breasts, at least until Volleyball-chan started coming to her defense. School Idol: Most boys in school absolutely love her, given her sweet personality and curvy figure. At one point, he even thinks she's faking it to trick him out of his money, but unbeknownst to him, that's not the case. Nice Girl: She's very polite and kind, a trait the Salaryman is very taken in by, in addition to her endowments. She's quite aware of the effect she has on men, especially the Salaryman, so in addition to soothing his woes, she'll sometimes tease him too. Fanservice: The most notable example, Ai-chan is small, cute, and very well endowed for a high schooler. Like Mother, Like Daughter: It's implied that Ai-chan's mother fell in love with an older man, much like Ai-chan is now. She briefly gave herself "Jay-chan" after they grow a cup, but she reverts back to Ai-chan. In-Series Nickname: She refers to herself as Ai-chan due to her cup-size. Height Angst: Ai-chan is shorter than most people and really wishes she could be taller. Not helping is Volleyball-chan regularly teasing her about it. D-Cup Distress: Her huge breasts are the source of much of her woes, since they keep growing. Lives with her mother and younger sister. She's called "Ai" because she (initially) wore an I-cup bra. Voiced by: Sayaka HaradaThe primary protagonist, a high school girl who meets and falls in love with a salaryman she meets on her train commute.