Shio Asami (Stephanie) was brought up in a wealthy family whose mother is a prominent opera singer. However, the bankruptcy of her father’s business forced her to give up becoming an opera singer. Moe Midorikawa (Hikari Mitsushima) entrapped Shio and claimed a victory in an opera contest. A competition of two heroines ensues, placing their pride on the line.

St. President school is one of the most wealthy schools around. Everybody in that school respects the Yukan club, the most popular and richest group in the school. This includes Shouchikubai Miroku, Kenbishi Yuuri, Kikumasamune Seishirou, Hakushika Noriko and Kizakura Karen. They go through dangerous adventures to save their school, and of course, just to kill their spare time.