Kakegurui - Compulsive Gambler -, Vol. 15

Kirari Momobami, Ririka Momobami, Mary Saotome, and...Yumeko Jabami. The
end of
the election campaign is down to these four and their wills. Yumeko
wants to gamble
with Kirari in a true test of skill and instinct-but
it's Kirari's twin sister, Ririka, who
appears before her....