[I know you meant pants but "unzipped hands" is really fucking funny, also because I hate you this feels like a trap. That is to say...Junpei does relax a little, a huff of laughter escaping even if it's not entirely amused and he rests his forehead on Carlos's shoulder.

Finally...]

...funny how you were the first and you're going to be one of the lasts. [He still has a free hand that's not super shy about inching for Carlos's waistband.] ...there're no consequences for either of us if we do this, are there?

[He doesn't want to be draining host power or anything, basically.]