So taewook and noona are real siblings???

I guess so ?? she's an alpha but isn't affected by the omega's pheromones ?? it's kinda confusing tbh i think it's from the translation

I think they are real siblings because she's not affected by his pheromones in the slightest even when they're cuddling. Him saying she smells nice, could be because it reminds him of home.

I used to cuddle with my siblings, now that's just weird with all but my sister. Lol.