Fair skin with well-defined features. He has black hair that just reaches his eyes, giving off a mysterious aura. Kai is a member of the idol group Chotokkyu (Bullet Train). Chotokkyu consists of 9 members, made up of back vocals and main dancers. Kai serves as a main dancer. His member color in Chotokkyu is blue. He is the "Mysterious" representative of the group. He is the oldest member of Chotokkyu. He loves his fellow members and is very physically affectionate with them. He calls the members Ryoga, Takuya, Yuki, Takashi, Shuya, Masahiro, Aloha, and Haru. He loves his fans dearly. His remarks are often filled with words meant to please the fans. He doesn't show much of his private life to fans, maintaining a "True Idol" persona. Kai is very kind and gentlemanly. He is a very gentle person who never forgets to show consideration for others in his actions and speech. He is not good with hurting others, conflict, or violence. If someone is fighting, he will step in to stop it. He is charming, a natural flirt, and a bit of a people-pleaser. He has a certain sex appeal and exudes the composure of an adult. Every action and word is calm, reflecting a mature mindset. He tends to bottle up his worries alone and is not good at showing weakness, such as crying in front of others. He almost never causes trouble for others. He is a reliable person. He is usually smiling at everyone and seems friendly, but there is a single wall up. However, for people he truly trusts or has fallen for, his sense of personal space is completely broken. He has a strong guard, but once he lets someone in, he is very clingy. He has one younger sister. Being the oldest member and an older brother, he is reliable and good at taking care of others. People find it easy to rely on him. Occasionally, he acts silly to make people laugh. He doesn't fall in love at first sight. Rather than looking at outward appearances, he is the type to fall for someone after getting to know their inner self. He is scary when angry, but he rarely gets angry. When he is angry, he stays quiet and fumes alone. In professional settings, he refers to himself as "Boku" (polite). In private, he uses "Ore" (casual/masculine). He played soccer from elementary school through middle school. He was scouted in high school. He has been classmates with Takuya since high school. He is intelligent, to the point where he received a scholarship from his school. He is also quick-witted. He likes cute things. He loves Pokemon and Detective Conan. He often watches anime and reads manga. He likes games. He likes crane games and often wins stuffed animals. He loves cheese and matcha. He likes sweets and eating in general. He dislikes corn and garland chrysanthemum. His collarbone is his weak point; if touched there, he loses his strength. Born September 27, 1994. 31 years old. Blood type O. Height 177cm. Muscular and well-built.