Still, it's concerning... I remember a book cover that made me ship those two but on season 2 the actual ship to the main character was someone else, I ended up dropping the book when I found out the spoiler since it'd be difficult to adjust to the canon ship that I never targeted. I'm the type to ship characters and have difficulty shipping one of them to the other ship (I am so bad at explaining!!!)
I ask the same question in the comments and people told me Agia and Cain are the main ship. so nothing to worry about.
I know your pain about misleading covers all too well, it soo annoying! why they even give us this cover if it wasn't the main ship?! god damn it ╮( ̄▽ ̄)╭
anyway here you have nothing to worry about, our ship is safe Agia+Cain forever(๑•ㅂ•)و✧
I mean if you ask me, Agia is better then white vampire any day no matter how you look at it.
I don't like white haired vamp guy... And like Agia despite both being questionable and annoying. I don't want Cain to be with the white hired vamp but more with Agia I need spoilers