The project's premise follows Kouta Hasegawa, a high school boy that loves the yellow Pom Pom Purin dog. By mere coincidence, he ends up attending the same school as Yuu Mizuno, a boy who likes the bunny My Melody. Yuu tells Kouta that there's nothing to be ashamed of for liking Sanrio's cute characters. Together, Kouta, Yuu, Shunsuke Yoshino, Ryou...