Dahlia Academy is a boarding school where the students come from two enemy countries: the Eastern Nation of Touwa, and the Principality of West. However, Romio Inuzuka, the first-year leader of the Touwa students, has always been in love with Juliet Persia, the first-year leader of the enemy West students. One day, Inuzuka decides to make his move and tell Juliet how he feels.

The Black Doggies have begun their training camp in preparation for midterms. Persia dons her "Julio" disguise and participates at Inuzuka's request. In charge of the camp is Inuzuka's childhood friend, Hasuki Komai. Inuzuka learns by chance that he's the reason Hasuki is so dedicated. Guilty about keeping his relationship with Persia hidden from Hasuki, Inuzuka gathers his courage.

Contenders for 'MVP' set their fighting spirits alight as the sports festival begins. Among them is a determined Inuzuka, now having been promised by Persia that she will entertain one request of his if he becomes MVP. The games progress with neither the Black Doggies nor the White Cats giving an inch, until finally the 7th event, 'Stick Down', is upon them. That's when the trouble begins.

Romio is occupied with finding a way to buy a present for Persia's birthday in a week, and acquires permission from the twins to go on an errand to Dahlia Street. But despite arriving in town with vigor, Romio can't decide on a present. That's when he runs into Char. He accompanies her with the promise of gift advice, and things get interesting when their shopping date runs into some trouble.