If you mean another manhwa where they attempt to escape via sewer, then there's another one that has this exact plot twist, but I can't remember the title right now, so sorry. :v
Yeah! Like I remember something like he left the seme but came back because he felt bad but then they caught him and brought him back
I think it's Bones and Petals, but I'm not sure
I think that's the one, thank you!
Am I missing something? I remember the ending where he tried to escape but the seme caught him again?