Bright 1st grader Maria Hoshino is an unconventional and energetic student who lives her life aspiring to the top of the female ladder. She tries her best to be liked by everyone, but she's only popular with her classmate, Sunao Miyoshi, and that's no fun. When the class representatives for the “Children's Assembly” are elected, one boy and one girl, Maria stands as a candidate. However, the majority of the class is in favor of Sunao...! A story about a girl's pheromones in full swing, as she competes for the position of popular girl!