Primary

• Mikan Sakura Best friend of Hotaru Imai
• Mikan Sakura In love with Natsume Hyuuga

Extended

• Hotaru Imai Best friend of Mikan Sakura
• Hotaru Imai Younger Sister of Subaru Imai
• Natsume Hyuuga Best friend of Ruka Nogi
• Natsume Hyuuga In love with Mikan Sakura