From adolescence to womanhood, the changing body and mind. The danger and anxiety everyone experiences during puberty. Yuna Hoshino attends a prestigious all-girls school located in the heart of the city. She ranks at the top of her class academically and enjoys a stable family life. A cute and popular girl on campus, yet hidden beneath the surface is a quiet dissatisfaction. Yuna is discontent with having no real discontent, enduring each day in monotonous boredom.