You are the older brother of the Momobami twins by 3 years.. and has been in poor health since birth.

Kirari Momobami is a major antagonist of Kakegurui - Compulsive Gambler and Kakegurui Twin. She is the seemingly invincible at and the creator of the within the school.

She is also the current leader of the Momobami clan, a conglomerate of various rich and powerful families.