Mei Onigami is a middle school student distinguished by chest-length blonde pigtails, rosy cheeks, and warm brown eyes. The youngest sister of Hazuki and Mutsumi Onigami, she anchors her family’s comedic dynamic as a central figure within their lively interactions. Her role as a main character emphasizes her vibrant visual charm and familial bonds, driving lighthearted narratives through playful camaraderie and spirited presence.