Primary

• 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

Extended

• Akira Toudou Love Interest of Yahiro Saiga
• 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
• Chitose Saiga Brother of Yahiro Saiga