Kakegurui Twin Vol. 6 (manga)

Down a whopping five million yen, Mary is sent flying into debt, her pride as a gambler in shambles. As she mentally resigns herself to housepet-dom, a ray of hope shines through the tunnel in the form of Juraku's collared pet and Mary-hater, Mikura Sado! Together, the odd duo must join hands to defeat the ultimate dream team-the Ougatou sisters. Does Mary still have what it takes to become a winner?!