It is known among fans that Stray Kids‘s Lee Know used to be BTS‘s back up dancer before he debuted as an idol with his current group.
Lee Know performed with BTS as a back up dancer in various stages, such as in their concerts, and other song performances.
Lee Know shared how J-Hope from BTS recognized him after debuting. He adds that he was very thankful to J-Hope for congratulating him for debuting as an idol after a long time.
Lee Know was very thankful to J-Hope for his kindness as he still remembered him even if BTS had lots of back-up dancers.