[Choreography Video] HOSHI - ‘BOYFRIEND'

In the Korean comments

The full routine itself was unexpected. One top comment reads, in translation, “I wondered if there could possibly be a Hoshi ‘BOYFRIEND’ choreography video—and Soonyoung had it ready,” while another says, “I never imagined there would be full choreography for ‘BOYFRIEND.’”

What the words mean

열일 (yeoril, working hard) is casual shorthand for 열심히 일하다 (yeolsimhi ilhada, to work diligently). Here, commenters use it affectionately to praise Hoshi for preparing and releasing more material than they expected.