Primary

• Jun Yamamoto In love with Sakura Ushikubo
• Jun Yamamoto Twin Brother of Megumi Yamamoto
• Jun Yamamoto Love Interest of Sakura Ushikubo

Extended

• Megumi Yamamoto Twin Sister of Jun Yamamoto
• Megumi Yamamoto In love with Yahiro Saiga
• Sakura Ushikubo Love Interest of Jun Yamamoto
• Sakura Ushikubo In love with Jun Yamamoto
• Sakura Ushikubo Best friend of Yahiro Saiga