Kei is very tall and has an incredibly slim build for a volleyball player. He has short blond hair and golden-brown eyes. He is often seen with a frown or a condescending smirk on his face. Tsuki is very blunt and teasing, his casual smug attitude. Whenever someone does something stupid or silly, he is usually seen snickering in the background. Despite coming across as arrogant, Kei has low self-esteem and thinks of himself as inferior. He maintains a persona of someone who shows little interest