Yuka lives in a large apartment with her single father, Masao, who works as a salaryman. Their apartment is overshadowed by a small apartment tower next door. Yuka does all the chores of the house and on her way to start another day of school, she finds that her looks still give her the face of a promiscuous prey. Toru has moved to the Aichi Prefecture to start a new school year, but is insecure about his large appearance. He finds that his looks still give him the reputation as a creepy pervert. As such, people fear him, giving him their wallets out of the blue.
Yuka has a best friend named Miho and Miho is a dog who wears boy's clothing. The two of them are in the same class as is the new towersome, mean-looking bear with the nickname of "Erotic Bear" --- Toru. After school, Toru was heading to the school's roof to check the view of the city. Suddenly, Yuka was seen with a notebook in her hand. An awkward moment ensues when her skirt flies up in the wind, revealing her strawberry panties, and leaving him surprised and the girl completely, shocked and embarrassed. Infatuated by the girl's beauty, Toru doesn't know anything about her aside the notebook she left behind, and that she wears strawberry panties.