Responses
Spoiler.....
So ido is a complete scum in the novel, ESPECIALLY in the first timeline he basically, physically and mentally abused sejin along with raping him, neglecting him and alot more horrendous stuff (some I could be mistaken since I did read it in the russian translation but these are for sure, but he was a RED flag in the novel)

Nahhh the author knew there wasn’t enough redemption in the world if we didn’t see him being nice first