Ein Jahr bevor Yumeko Jabami an die Hyakkaou-Privatakademie kommt, wechselt Mary Saotome auf die Schule. Schnell lernt sie, dass es hier nicht die Schulnoten oder das Können im Sport sind, die bestimmen, wie hoch man in der Rangordnung der Akademie steht, sondern das eigene Können im Glücksspiel – und Mary ist entschlossen zu den Gewinnern zu gehören.
Kaum an der Hyakkaou-Privatakademie angekommen, hat Mary bereits ein eigenes Casino erspielt und einen Plan aufgestellt, um ihre Freundin Tsuzura freizukaufen und sich ein unbeschwertes Leben an der Schule zu verdienen. Aber dann taucht Aoi, Mitglied des Schülerrats auf, der ganz andere Pläne für Mary hat.
Thanks to their strong bond, Mary and her team overcome the coupling gamble, and the now-famous gambling star joins forces with Aoi Mibuomi. As she climbs the ranks of the wealthy institution, though, more and more challengers step up to take her seat, including Aoi's fiancée, Sakura Miharutaki, and Juraku's housepet, Mikura Sado...Will Mary be able to handle this baptism by fire?!
Yua Shishiba has already stolen the Literary Club from Mary and has her sights set on Sachiko next. But Mary isn't afraid to play dirty. Nothing, not even innocent bystanders, are safe as she tries to take down Yua's allies.
Aoi's call to action trap has been sprung, with student organizationsall over the school caught in his net. With even President Kirari ensnared, aseat at the student council is at stake!
Having defeated the middle school duo, Mary begins to plot her revenge on Yua Shishiba. But Shishiba wants revenge of her own, and decides to target Sachiko Juraku...Now, these three clash in a gamble prepared by Kirari herself!
After rejecting an exclusive love call from the student council nice guy, gambling hotshot Mary Saotome has been attracting all sorts of unwanted attention-especially from her classmate and hater Kokoro Aiura, who tries to sabotage her every chance she gets. Can Mary beat the anti-fan at her own game and end the petty bullying once and for all?!
