Primary

• Koharu Younger Version of Shuntarou

Extended

• Shuntarou Older Brother of Fuyuno Hinamori
• Shuntarou Older Brother of Ayaka
• Shuntarou Younger Brother of Chiaki Hinamori
• Shuntarou In love with Ayaka
• Shuntarou In love with Fuyuno Hinamori
• Shuntarou In love with Chiaki Hinamori
• Shuntarou Older Version of Koharu