Don't click it's a mf spoiler

HOLY MOLY

But how come he knows the outcomes of the stories before anything happens????

Is this actually a spoiler or just a guess?

And I thought so
I knew when he said why is my best friend 's face here and all that

Is this for real???

OMG IS THIS DRFRRRFRTEJTBRJJENENEJWKWBWKWMWJWOQMQNW????

No.

Here's a better summary from manga*updates:

Huimin Seo happened to read a tragic BL novel where the two main characters had both his name and even his best friend’s name, Iheon Cha. But rather than remaining as an incredible coincidence, this book becomes a new reality for Huimin. Before he knows it, he is transmigrated right into a major scene in the novel where Huimin Seo, a rare dominant omega, gets bought off in an auction by Iheon Cha, a powerful dominant alpha. Aware of the complications in this love-hate relationship that he cannot escape from, Huimin must tread carefully to turn things around entirely.

Transmigration.

he relives his past, the flow of the story is kinda confusing but you'll see what i mean