Primary

• Hinagiku Katsura In love with Hayate Ayasaki
• Hinagiku Katsura Younger Sister of Yukiji Katsura
• Hinagiku Katsura Friend of Ayumu Nishizawa

Extended

• Hayate Ayasaki In love with Maria
• Ayumu Nishizawa In love with Hayate Ayasaki
• Yukiji Katsura Childhood friend of Kaoru Kyounosuke
• Yukiji Katsura Older sister of Hinagiku Katsura