Dai is a well-built man with dark hair and brown eyes.
Dai is man who carries himself well, both in manner and appearance. Because of this, he is quite popular with the ladies.
Prior to becoming a manager, Dai was part of a security police task force. He was also hired into Tsukino Talent Production as a body guard, but along the way became a manager.
Dai and Kanade get along very well, despite managing sibling/rival units. They often boast about their respective unit members' achievements to each other in a friendly manner. The two also go out to drink whenever there is time or reason to celebrate.
Dai tends to act as Procellarum's body guard rather than their manager, but handles them well. To Procellarum, he has earned a position as their father, and has actually received a gift from Procella during Father's Day.
- His surname, Kurotsuki (黒月), means "black moon".
- Dai (大) means "big" or "large" and may reflects the fact that he has a large built.
- Dai can endure summer heat very well, apparently because he was born in a summer month.