Help, I can't remember the name of the K-drama I found on TikTok

The male lead is pretending to be a staff member or janitor (I don’t remember exactly because it’s been too long). In the trailer, he fixes something. He is also younger compared to the male lead of 'Revolutionary Love' (2017). I found that drama, and it looks similar, but it’s not the one. tnx

Man to man?