Jiang Yu transmigrated into a book, becoming the ex-boyfriend who was cheated on by the protagonist uke.
In the book, he had been dating the protagonist uke for three years and thought their relationship was steady. It wasn't until he discovered the existence of Seme One, Seme Two, Seme Three, Seme Four... that he realized his boyfriend was chaste at home but wildly promiscuous outside it.
After the breakup, he went to a bar alone to drink himself into a stupor.
He died suddenly from drinking too much.
When Jiang Yu arrived, he was drinking himself into a stupor at the bar. He couldn't hold his liquor, and he couldn't remember what happened afterward.
All he knew was that when he woke up, he had not only transmigrated into a book, but there was also a strange man beside him.
Jiang Yu: "What do you do when you transmigrate into a book and immediately end up in bed with a stranger? Asking online, this is urgent! I'm not even wearing pants."
Theme: Meeting you is the best of omens!