I know that many might come after me after reading this, but Sejin isn't really being any different from what he's suffered in his past life, if he decides to walk on this road. I read at length everything Kwon Ido did, but Sejin and this story is not at the redemption arc, Kwon in this life already proved himself by changing very drastically.
I've said this before and I'll say it again, Kwon Ido's efforts were so so nice and meaningful that I was about to mark him as the greenest flag seme I've read in the stories so far, until obviously I read about the plot twist of second life.... Which made me see why he went above and beyond for Sejin. But that's it, I'm not supportive of everything it did, but how much he changed for Sejin inevitably shows how much he repented and loves Sejin, because no one can really give me this bullshit that someone would even think of changing for someone if they gave zero fucks.
HE DID NOT JUST SAY OR CLAIM, HE DELIVERED
At this point of time, if they both really will get together, it only makes sense that none of them do repeat or imitate each other's horrible behaviour just for the sake of GET A TASTE OF YOUR OWN MEDICINE. The more mature thing would be to cut each other off completely, and if despite all, they still want to give it a shot, then this is a very toxic approach.
I'm ready for heavy criticism, but I hope I find some sensible replies as well. Atleast be decent even if you all don't agree. Thank you