Primary

• Shunsuke Sakaki In love with Chisato Takatsukasa
• Shunsuke Sakaki Friend of Riju Takatsukasa
• Shunsuke Sakaki Classmate of Riju Takatsukasa
• Shunsuke Sakaki Son of Kanzaki

Extended

• Chisato Takatsukasa Father of Riju Takatsukasa
• Chisato Takatsukasa Son of Chihiro Takatsukasa
• Chisato Takatsukasa Younger Brother of Chitose Takatsukasa
• Chisato Takatsukasa Younger Brother of Chidori Takatsukasa
• Chisato Takatsukasa In love with Shunsuke Sakaki
• Riju Takatsukasa Son of Chisato Takatsukasa
• Riju Takatsukasa Friend of Shunsuke Sakaki
• Riju Takatsukasa Classmate of Shunsuke Sakaki
• Riju Takatsukasa Lover of Kakeru Nijou
• Riju Takatsukasa Grandson of Chihiro Takatsukasa
• Riju Takatsukasa Nephew of Chitose Takatsukasa
• Riju Takatsukasa Nephew of Chidori Takatsukasa
• Kanzaki Father of Shunsuke Sakaki