I can't understand how elf and the goddess representative can't be parasitisized. I mean H...

i think it was said that it was because of the "elf blood". nothing to do how strong or weak you are but just your genes.

That's what I'm getting at. Elf blood. compared to a dragon species it's weaker. A bloodline of the the pinnacle species can't even stop it. And I can understand Hanbin slowly recovering as years of hell makes his will strong.

I meant that It's not about the strength of the blood but about the race. Elves just happen to be resistant to mind control when other species are not.

Not sure if I'm explaining this well, but for example if you compare two poisonous snakes and the other has stronger poison. The one with the weaker poison bites the stronger one, but even if it's stronger, it doesn't mean that it's immune to that particular poison.

Or you are a given a vaccine for polio. No matter how horrible polio is, that polio vaccine doesn't protect you from corona. It's like elves have vaccine for corona, while dragons have the vaccine for polio.

That's awfully convenient. Usually in fantasy world mind control is tied to either willpower or strength of the bloodline in order resist. Even if elf is more resistant to mind control there's supposed to be a racial hiearchy like a goblin mage can't use mind control on a higher species. A leech even if a higher variant shouldn't be able to control a dragon species. I'm just saying this based on how parasites work in other novels. Usually they only work on low level mobs. I wouldn't be surprised if the half elf is the one who is controlled and threaten the others of his safety.

I suppose I get your point but I think it's way more interesting to make different species balanced. There are a lot of balancing in this too, as in even if Hanbin is super strong and op, he can't reallly use magic (other than aura) or he can't use any items with the level cap of 5. Then there's Adjest, who is indeed a dragon, but a young one, as stated many times, so he's very weak for a dragon. And wyvern is not a dragon, even with a dragon's core. While the dragon's may be super strong, it doesn't make them all mighty and they too have weaknesses. I really don't think this is about racial hierarchy at all.

If we're comparing fantasy to another fantasy, I'd like to mention the different races in Dungeons and Dragons. Like some races have dark vision, others do not. Other's have better stats, but others have better features. Particularly in DnD elves are also resistant against being charmed (a state of mind control), so while the fact may seem "convenient", it really makes sense to me that elves may have resistance towards it.

And while I agree on "goblin shouldn't be able to kill a dragon", I think a leech controlling a dragon is reasonable, if the only thing the leech can do, is control someone. And considering that the leech is not actually a creature of it's own but a "seed" of the evil lady, I think it's even more reasonable. Just like grass can grow trough asphalt or a small stream can carve out stone, given enough time, I think a small, mind controlling leech with magical abilities controlling a dragon makes sense.

TL;DR; In my opinion, it's much more interesting when characters aren't op just because they were born with special blood. While elves may be strong in this situation, they may be helpless in another one.

She basically said in the latest chapter that only children cannot be parasites because they lack the necessary number/amount or vastness of memories to twist into whatever form she wants, Kivye is 4 weeks old and Rondelle is still essentially a child but she was working towards turning him .

As for his brother I'm not particularly sure of the rationale other than the fact that I think she said that it essentially only works with those with particularly human disposition but that creates more plot holes in that Atisse and Wyvern chick are not human so.... Idk
Or maybe she just needed a fully functioning non-parasite to maintain the lives of the non-functioning infecteds....