[2] DRX had a solid showing in the 2020 LCK Spring Split, finishing with a 14–4 record and on the back of a seven-game winning streak.

[7] Entering the 2020 League of Legends World Championship as the LCK's second seed, DRX progressed beyond the group stage.

However, their Worlds run ended in the playoff quarterfinals against DWG, mirroring their previous encounter in the LCK Summer Split Final.

[2] Despite facing challenges early on in the 2021 LCK Spring Split regular season, T1 finished it with a five-game winning streak, securing a spot in the playoffs.

[13] In October 2021, T1 defeated Hanwha Life Esports in the LCK regional qualifier finals, securing their place in the group stage of the 2021 World Championship.

Keria's performance earned him the distinction of being named the 2022 LCK Regular Season MVP, making him the first support player to receive this honor.

[22] After T1's win over DWG KIA in the 2022 LCK Summer Split playoff semifinals, Keria was looked visibly ill postgame.

[30] Alongside the entire starting T1 roster, he received a spot on the 2023 LCK Spring First All-Pro Team, and Keria was named the regular season MVP for the second time in his career.

[31] Despite their regular season performance, T1 reached the Spring Split playoff finals but once again fell short against Gen.G, finishing in second place.

[33][34] In July 2023, during the 2023 LCK Summer Split, T1 encountered challenges as mid laner Lee "Faker" Sang-hyeok was sidelined due to a wrist injury.

[36] Keria reached his second consecutive appearance in the Worlds finals after T1 secured a victory over JD Gaming in the semifinals.

T1 carried this momentum to win the following two games as well, resulting in a 3–0 victory and giving Keria his first World Championship title.

[40] Keria clinched a gold medal as South Korea emerged victorious against Saudi Arabia, China, and Chinese Taipei in the quarterfinals, semifinals, and finals, respectively.

He began playing video games when he was four years old when his grandmother dropped him and his older brother, Ryu Tae-seok, off at a PC Bang while she was running errands.

Although his initial interest in the game was modest, he was inspired after watching a highlight montage featuring the gameplay of Hong "MadLife" Min-gi.