Primary

• Shinobu Maehara In love with Keitaro Urashima

Extended

• Keitaro Urashima Childhood friend of Naru Narusegawa
• Keitaro Urashima In love with Naru Narusegawa
• Keitaro Urashima Cousin of Haruka Urashima
• Keitaro Urashima Husband of Naru Narusegawa
• Keitaro Urashima Adoptive brother of Kanako Urashima