Where is the cinematic for Kyne?

Do you mean Kyne as in the Nord's interpretation of Kynareth, Goddess of the Wind from Skyrim, or Kayn, the Shadow Reaper, the upcoming Champion in League of Legends?

(I know what you mean, though, I just had to make the joke)

I hope he doesn't get one. His character honestly doesn't seem worth the effort.

they dont have to do cinematics for everyone

Xayah and rakan got a cinematic, cinematic are very uneffectiv. So I think it will take some months until the next champion gets a big cinematic like X&R

he doesn't even have a login screen