@secret
Spoiler!
past, all these things happen in the previous timeline which lead to the present timeline the manhwa starts with now. sejin remembers the past timeline because a couple chapters ago ido imprinted on him. imprinting allows sharing memories between mates, so now sejin is learning what happened to him in the last timeline from ido's memories.
Fellow jjk and bllk reader, genshin player, and bl fanatic :]
