T1 announced their 2021 theme song, Runner. On Feb. 1, T1 revealed the music video of their theme song for the year 2021 on their Youtube channel. In the production of their new theme song, singer Baekhyun of EXO, rapper Changmo, and producer Raiden participated to mix rock, trap, and EDM.

The music video starts with Lee “Faker” Sang-hyeok playing the piano and features the singers that participated in the production as well as the T1 LoL players. The music video of Runner can be seen on T1’s Youtube channel and can be streamed from music streaming sites.