After Passing Through the Book, I Inexplicably Became the Person Who Printed the Eunuch's Palm

Once Song Jingyu traveled through time and became the cannon fodder male supporting actor who paved the way for his brother, he would also be poisoned to death by his biological mother. Oh my God, what a shitty plot this is. For this reason, Song Jingyu thought that since he was at least physically free from illness after traveling here, he would live a good life in place of the original owner and go to a place where no one cares after his death to enjoy life. However, who can tell him why he is entangled with the legendary living king of hell Gu Jin, and the other party is pressing harder and harder, with nowhere to escape.