There are a lot of fictional characters I dislike. It doesn't matter if it's in a movie, tv drama, books, mangas, or manhwa/manhua. Still, I've never hated someone so much as I hated Rachel from Tower of God, and yes, Yahwi, but the difference between these two characters is that Rachel is well thought and amazingly written; she's annoying but compelling at the same time. As for Yahwi, dunno man, he's just irritating. LMFAO.
And Cain is mad sus.
Jooin is just too gullible or maybe he's just stupid.
Disclaimer: All the characters of this manhwa need therapy because they got issues in life. Dropped it for now and will pick it up again once it's over. I MIGHT CHANGE WHAT I THINK ABOUT THIS WHOLE MANHWA ONCE I SEE SOMETHING REMARKABLE. For now, ciao.