Primary

• Megumi Yamamoto Twin Sister of Jun Yamamoto
• Megumi Yamamoto In love with Yahiro Saiga

Extended

• Jun Yamamoto In love with Sakura Ushikubo
• Jun Yamamoto Twin Brother of Megumi Yamamoto
• Jun Yamamoto Love Interest of Sakura Ushikubo
• Yahiro Saiga In love with Akira Toudou
• Yahiro Saiga Best friend of Sakura Ushikubo
• Yahiro Saiga Love Interest of Megumi Yamamoto
• Yahiro Saiga Brother of Chitose Saiga