Well there's nothing confirmed yet, but my guess is that it's Fire.

I know there's nothing confirmed yet still I strongly believe that it's fire and I respect your opinion I guess we'll have to wait for season 2 until something is confirmed about who it is

Is lite supposed to like kyoga in every life?

Yes I do think he is

unless there was one time where he was reincarnated as someone who hated her but this is just me speculating

Fire doesn't seem to like nothing, he ¨loves¨ her as his sister.

Yep and also still could be him but nothing has been confirmed yet who knows we all know my pride has a lot of plot twists and turns it could be fired and also could not be

True, but what about thunder?

Thunder I don't really see being lite in my opinion but he still could be but I don't really see it happening to be honest I See Fire being more of lite but if you think it's Thunder I respect your opinion

But also we haven't seen how thunder personality is,

Well atleast i haven't seen how he is.

True we still haven't seen any of his actions or how he behaves we don't even know if he's going to be a good or a bad lion who knows he may be a likeable character but we don't know but I do trust Tribble and I trust that she may have a few surprises waiting for us for season 2 and a few plot twists for us