I think the end thoughts were seungho, all the closing shots with those thoughts were focused on him rather than nakyum and he has a weird look in his eye as well. It makes more sense for them to be his thoughts too since he's the one who slept around so much and has been around so many naked bodied. Nakyum regardless of the circumstance usually conveys what he's thinking and he already shared what he thought during the chappie. Dunno makes more sense for those to be seungho. Also take into account the fact that Seungho is mad that nakyum is being submissive and wanted him to tell him why, so it'd make sense for him to ask why it matters what their thoughts are since he's inconsiderate and doesn't give a second thought to anyone else
I think the end thoughts were seungho, all the closing shots with those thoughts were focused on him rather than nakyum and he has a weird look in his eye as well. It makes more sense for them to be his thoughts too since he's the one who slept around so much and has been around so many naked bodied. Nakyum regardless of the circumstance usually conveys what he's thinking and he already shared what he thought during the chappie. Dunno makes more sense for those to be seungho. Also take into account the fact that Seungho is mad that nakyum is being submissive and wanted him to tell him why, so it'd make sense for him to ask why it matters what their thoughts are since he's inconsiderate and doesn't give a second thought to anyone else