From Easy Going Scans:

Leesu came from a poor family but he didn't mind at all not having any money or status. Being the school's strongest fighter made him feel as if he was on top of the world in his eyes. But alas, a car accident made him lose what was most precious to him; His ability to fight! Craving for his past glorious days he turns to fencing with the hope to regain what he once had?

Those in serious debt to a certain man can either pay the price or join a certain game, a "gamble" as he likes to put it. To win, you must acquire points by defeating the other game participants. What will happen to the players...?