Having participated in high-level competitive matchups since 2006, Bisu made his breakthrough at the 2007 MBCgame Starleague (MSL) final, defeating experienced players Nal_rA and sAviOr, both 3:0. At that time Bisu was one of the few Starleague Protoss players. He qualified for the 2007 MSL automatically for having received a KeSPA distinction as the best Protoss player. Prior to the breakthrough match with sAviOr, which is sometimes referred to as "March 3rd revolution", Protoss players generally underperformed against Zerg. However, this was soon to change. During Bisu's preparations for the match with sAviOr, the MBCGame HERO coaching staff, as well as Protoss and Zerg players gave Bisu some ideas. The general advice was to use Corsair units to eliminate Zerg Overlords, narrowing Zerg's observation. Bisu's effective execution of this strategy found great success. Following Bisu's victory, several players started to emulate his winning Corsair–Dark Templar combination to fight Zerg opponents.