
Spoiler
If you read up to now, Ido took care of his brother after 'current' brother tried to rape sehin in bathroom. It is implied that brother was killed. In previous life (what's happening now) Ido thinks seeing had sex willingly with brother and Ido then rapes him. So Ido is doing redemption arc in current life.

Seeing is Sejin. Yes, it's rough, bc the first part was so sweet of do taking care of him. If you remember in the start of the story, he had those nightmares? Of ido raping him? That's what's coming up. It's a bit co fusing, because right now, Sejin is now seeing Ido memories (because Ido marked him). So all the 'current chapters are Sejin experiencing the 1st life through Idos memories. Previously he had only experienced through nightmares
if IDO has redemption arc for the uke BUT NOT FOR ME BITCH THERE AINT NO FORGIVING NOR FORGETTING FOR THIS BULLCRAP