Probably because of some twisted "love" so he goes after the reincarnation of his brother's love interest. He think because of grooming from the young age, Ian will choose him (the first dragon found him) instead of Sol.
Oh that's fucked. I forgot he took Ian in when he was still a child
You can reread some chapters in SS1 when Ian's arrested and condemned to exile. The blonde dude said smt like that with sleeping Ian.
Yeahh i should reread S1 LMAO this flashback has been going on for too long.
I reread and that groomer's attitude and actions make so much sense now.
At this point, i still have no idea why Lorkan is so obsessed with Ian in the present timeline. Ik that it's probably gonna be explained later on but that won't really justify his present-day actions for me, I just don't get the trope of going after your sibling's love interest. (Also, the backstory's pacing is not the best)
Third parties are so common in BL, but does the 3rd person have to be the sibling? I also can't just say that this is sibling rivalry cause, objectively, that's kinda weird, no? I'm an only child so i dont get a lotta these sibling tingz.