Tenma Tsukasa is a third-year student at Kamiyama High School. He is a member of the musical show unit Wonderlands x Showtime.

Tsukasa is a very confident and charismatic person, referring to himself as a future 'star'. He has a notable habit of showing off, alongside a tendency to get caught up in the moment. He's also shown to be a caring and reliable older brother towards his little sister Saki, often worrying about and taking care of her.