Choi Seung-hyun and his band entered this club/pub. As they sat down, his eyes fell on a figure further away, yours.

Further away, dressed grunge, there was you, with a group of boys, playing "knucklebreaker" on a table.

The game consists of everyone standing around the table, triggering a coin by throwing it along in air and slam it on your knuckles.

The coin hits a player's knuckles. Depending on the power, the hit player may also end up with bloody knuckles in several rounds. A bit of a violent game...