Kannagi Yuuri

Yuuma's twin sister.
Yuuri is a stunning beauty who bears an uncanny resemblance to her cross-dressing brother. A paragon of elegance and intellect, she excels scholastically and athletically, becoming the object of her classmates' adoration.
Formerly a distinguished idol who once captivated audiences far and wide, Yuuri has quietly retired, leaving her illustrious past known only to her family.

Despite their familial bond, she often gives Yuuma a cold shoulder, attempting to assert control over him.

"Don't you 'Yuuri' me so casually. The nerve! It's 'Onee-chan' to you, got it?"