Yuumi was released for League of Legends in 2019 as a support champion, a magical cat who rides her Book of Thresholds and attaches to teammates. The phrase soy main comes from Spanish speaking player communities, where main means the champion someone plays most. Clips declaring a Yuumi main spread through gaming Discord servers and short edits because the champion divides opinion among players. Fans use the line with pride while opponents use it ironically, which keeps the short sound circulating in League of Legends meme culture.