don't read this if you don't want spoiler
they were already engaged in their previous lives, the uke gave the seme's company secret to his father (basically betraying the seme) seme was pissed. uke also got raped by the seme's brother. seme didn't believe him and thought uke cheated on him. bunch of unfortunate things happened to uke. i think the uke died at some point? then the seme found out the truth (how uke was desperate for his family's approval, he got raped, etc) he regrets everything. he then was given the chance to re-do everything so in this second life he tries to fix things, which is why he knows everything that is about to happen. he doesn't want to bond with uke/make the engagement secret bcs he planned to let go of uke and let uke find his happiness
omg thank u so much, my initial thought on this story is they have lived together in previous life but maybe on the historical life and then the seme regret something he did so when they reincarnated, he tried to fix thing but I guess it's not too far from what I read here. hahah thanks, really appreciate ya!
I'm sorry, I follow the story from the start but I still can't understand what the fuck is happening, would be appreciated if someone can simplify it for me about what the drama is about