Kakegurui Twin

It is both a spin-off and a prequel to Kakegurui – Compulsive Gambler, which is written by Kawamoto and illustrated by Tōru Naomura.

Kakegurui Twin takes place a year before the events of the main series and the arrival of Yumeko Jabami at Hyakkaou Private Academy.

[3] Written by Homura Kawamoto and illustrated by Kei Saiki, Kakegurui Twin began its serialization in Square Enix's Gangan Joker on September 19, 2015.

[11] A 8-episode live-action web series adaptation was released on Amazon Prime from March 26 to April 16, 2021.

[13][4] Shaenon K. Garrity of Otaku USA commented how Kakegurui Twin is the perfect manga for "readers who are equally interested in introductory game theory mathematics and kink".