ギャンブルフィッシュ

Tomu Shirasagi transfers into the elite Shishidou Academy at fourteen and announces he will turn a hundred yen into ten billion in a month, betting his way up through a student body that looks down on his public-school background. His first clash is with Mika Shishidou, granddaughter of the school's founder, and behind the games stands Reiji Abidani, the scarred dormitory supervisor who keeps sending challengers his way. His roommate Kazuki Mizuhara backs him through every hand.