Arigatou Gozaimasu, Zako Chinpo-sama The Motion Anime

The main character falls in love at first sight with Rika Ohmita, a girl transferred from another school. However, she turned out to be quite rude and often bullied the hero because of the size of his penis. Soon she moved to another school and everything was forgotten. After a while, now the main character has to move to another part of the city and change schools. There he again meets the matured Rika and feelings again awaken in him. However, this time the hero does not intend to become an object of ridicule and takes the initiative himself....