Kyousuke Ageki

The main character of this series. Kyousuke Ageki is a big guy who loves to eat, specially junk food. He even orders pizzas before class and eats at school. Ageki is smart and he is also very skilled at drawings.

Upon finding Itsuha Mitsukura taking selfies in her underwear on the school terrace, Ageki starts talking to her, and the two develop a secret and unlikely friendship from that day on. Ageki's main goal now is to draw sexy illustrations that can excite Itsuha, while using her as his personal model.

The reason Ageki doesn't fall for Itsuha's provocations—nor does he feel sexually attracted to her during the time they spend together while she wears her lewd outfits—is because he was sexually harassed by his older sister when he was younger, which led to the development of erectile dysfunction and weight gain as a result of the trauma. Despite what happened, he holds no grudges against his sister, and the fact that he enjoys drawing Itsuha's sensual body shows that he is still capable of feeling attraction.