
first: so in the first season we see taehyuk longing for the chart of his past self he's constantly in his childhood looking for things that are related to hyo un, at first i thought he was just feeling left of his current life but its wasn't that he was always looking for black hair people or a puppy the nickname he gave hyo un when he was little he was yearning so bad.
second thing: i couldnt bring my self to hate his obsessive brother, after re reading i came to understand that him and hyo-un are quite similar, hyo-un its also obsessive with taeh yuk, in fact theres some parallelism in them i believe teahyuk its a caring soul but also he finds himself again helping a child after other people abuse them, theres of course a difference between them after all hyo-un respect more taehyuk wishes than his obsessive bother, then again, he learn his lesson after many lives sadly teahyuk didnt forgive him ( and i think he did the right here) and he was okay with that, that all im gonna say.
not fan of the tropes this author does but reading anyway for the expectations... im looking forward more about his dominant alpha brother (hate him btw) and his dominant omega who tames him, thats sure sounds promising