Because I'm fucking bored and I want to see this argument escalate, Imma just add some details that can potentially tip the scale. Or whatever. I'm just saying shit.
Luminas being attracted to Aisha isn't inherently wrong or pedophilic, as he never pays attention to her physical form or age. That's because he's already aware that Aisha has lived a past life and is older than she looks. Veon, on the other and, is a whole ass adult but is still attracted to a fucking child (or what he thinks is a child).
BUT a Spirit King just randomly being attached to some human girl is fucking stupid.
Conclusion? This is a classic Mary Sue cliche, and that's why it's popular. Because it's fucking cliche. (And weird but let's move past that)

I know the spirit king is probs gonna be the ml cause he has way more screen time than Veon but it’ll be so lame if he is the ml cause HES LITERALLY GOD LIKE HUH.?? HOW IS GOD JUST GONNA UP AND FALL IN LOVE WITH A RANDOM 14 YEAR OLD??. Like it’ll feel so odd and random for them to end up together.
ANYWAY TEAM VEON FOREVER(๑•ㅂ•)و✧