Primary

• Sakura Ushikubo Love Interest of Jun Yamamoto
• Sakura Ushikubo In love with Jun Yamamoto
• Sakura Ushikubo Best friend of 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