Primary

• Kei Takishima Brother of Sui Takishima
• Kei Takishima Son of Satoru Takishima
• Kei Takishima In love with Hikari Hanazono

Extended

• Hikari Hanazono Rival of Kei Takishima
• Hikari Hanazono In love with Kei Takishima
• Sui Takishima Brother of Kei Takishima
• Sui Takishima Son of Satoru Takishima
• Satoru Takishima Father of Sui Takishima
• Satoru Takishima Father of Kei Takishima