
I want to believe it to be the blonde guy, but if you read this authors works, you can tell they have a "type" when it comes to uke and seme. Seme is always taller than the uke, and most of this author's semes have pretty / long eyelashes.
My guts are telling me uke will be black haired, but I hope my instincts are wrong ╮( ̄▽ ̄)╭

Yaa I noticed that too but then the blond guy think of black haired dude as a "Prince straight out of shoujo manga" so it would be weird if he would be the prince in their relationship and a socially awkward guy wouldn't jump the gun if they're uke(well there are some but not many) cuz usually its the semes doing that. Obviously the guy took the invitation to come over the blonde's place to do the deed. Well we'll know the moment chap 2 is uploaded.
Okay. Place your bets! who's gonna be the bottom.