Mei no MaidenMay's Maiden; Mei no Maiden; メイのメイデン; 메이의 메이든

That place is a den of sin in which money and lives are bet. Ai, a faint-hearted and quiet girl sunk in debt at the brothel Maidens, meets a formerly wealthy girl, May. If you lose the bet, it costs you your virginity!? Set in a combined casino-brothel, the sexy but cute May will end up doing it tonight as well.