Since his transfer from MBCGame HERO to SK Telecom T1 team in 2008 Bisu, along with Stork, has been leading the Protoss players and both were called "Twin Carriages".

[8] 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.

[11] Prior to the breakthrough match with sAviOr, which is sometimes referred to as "March 3rd revolution",[1][12] Protoss players generally underperformed against Zerg.

[10] In the first half of February, 2008 Bisu (who was already atop of the KeSPA ranking, the first protoss to achieve that) was transferred from the MBCGame HERO team to SK Telecom T1.

The latter team failed to score good results in leagues and confront the new generation of professional gamers, and the entire coaching staff was dismissed.

Bisu defeated the Terran lineup of players Flash, Hwasin, Leta and NaDa, but failed to score a win against sAviOr.

Bisu managed to successfully use speed-upgraded Zealots to obtain map control and engage the Hydralisks before they reach mass numbers.

[15] On April 2, 2011, Bisu, having defeated Jaedong in the Shinhan Winners League playoff, broke what he called "a vicious cycle" of his Protoss versus Zerg gameplay.

[17] He once revealed, that only after learning the skill of combining different units (i.e. ground, air, high templars, reavers) he began to enjoy playing against Zerg.

[21] Bisu then went on a slump, making a comeback in the next year[1] by winning the ClubDay MSL final against another Protoss player, JangBi.

[28] Nonetheless, as of June, 2011, Bisu collected five Monthly MVP titles, equaling that achievement with Flash, Jaedong and SlayerS_`BoxeR`.

[29] On June 7, 2011, having defeated Protoss player Flying, Bisu equaled Flash's record of 57 victories in a StarCraft Proleague season.

[29] In addition Bisu managed to advance to the main group stage of the MSL tournament 11 times in a row, approaching sAviOr's record of 13.

[36] Although StarCraft is considered a balanced game in that all three races have successful professional players, the maps differ from each other in properties such as the terrain openness.

[8] Like other Protoss players, Bisu generally starts the games with commencing a second base, Corsair harass when confronting Zerg and subsequent attack of mixed units, including High Templars.

Conducting a relentless harassment, often using Probe scouts and known for superlative multitasking, Bisu widely used Corsairs to gain air superiority and Dark Templar assaults against Zerg.

[39] Along with Corsair and Shuttle harass, Bisu's multitasking and Zealot timing rushes are considered standard for his matches against Zerg players.

[16] In his gameplay against Protoss Bisu successfully used the so-called Manner Pylons to block direct access to his opponent's mineral fields and disrupt his economy.

In the following year, at the WCG Grand Final, Bisu put two consecutive Manner Pylons at player PJ's base.