Could someone plz tell me who is the seme and who is the uke?

I think its obvious that the white one is the uke
Right(??)(￣∇￣")

I see that in there but I feel like the white hair guy is so much more like a seme

its the human (check raws)

The seme or the uke?

the uke has white hair but that was pretty obvious. In yaoi its always the smaller one :/

It's obvious from the prologue that the uke is the white hair. And the art is so beautiful, it makes them look smexy ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄ ლ(´ڡ`ლ)