Okay, so, for me, there is always a Seme at first glance. What I mean is, in every ship I read, look at, ship, etc, there is always a perfect Seme.
For example:
SasuNaru
Sasuke: Seme
Naruto: Uke
I always think one of them is a Seme and keep it that way. More examples:
Septiplier
Mark: Seme
Jack: Uke
Sonadow
Shadow: Seme
Sonic: Uke
BakuDeku
Katsuki (Kacchan): Seme
Izuku (Deku): Uke
KakaIru
Kakashi: Seme
Iruka: Uke
Tythan
Ty: Seme
Ethan: Uke
KiriKami
Kirishima: Seme
Kaminari: Uke
Mephilver
Mephiles: Seme
Silver: Uke
And a bunch more.
