Spoilers
So the stalker is not the brown haired sunbae but the blonde one thats friends with the sister, and he was also sent into the past. In the first timeline, he was obsessed with the sister cause she was nice to him when no one noticed who he was, so he got mad when she married the brother and killed them. In this timeline, he achieves his goal and dates the sister, but he finds out the brother and sister start working together at the same company and he gets jealous and tried to kill the brother. (The color of his car is super important!!! Check the first chapter!!) The sister finds out that hes acting very strange and possessive but he then kidnaps her when daeea and haneol finds out he was also sent back in time. So theres this big standoff in an abandoned building where the sunbae jumps off and dies. And then daeea faints and she wakes up 7-8 years in the future where shes married to haneol (sis and bro dont talk anymore) but she cant remember the second timeline they’re living in:(
This is everything that happened up to the raws...also this doesnt happen until muchhhh later so sit tight guys
I read up to all of the raws(cause i understand korean) and wow you guys are in for a heck of a ride....its gonna get crazy