Pii Natsu ga Ippai

Natsume experiences a busy first day of her second year of high school. Chiyako, the class beauty, insists on becoming her best friend. Natsume also develops an immediate attraction to a freshman, Rui, who is Chiyako’s younger brother. She discovers several unexpected aspects of Rui’s life. He is a successful model, yet he is moody, sadistic, and cruel. He also dislikes summer, Natsume’s favorite season. Despite this, the sincere and down-to-earth Natsume remains undeterred. She resolves to connect with him while also showing him a few things herself.