Ji Yoo traveled to a world where the plot of the novel could exist. Here, the protagonist was regarded as the favored son of heaven, his engagement was broken off, he was framed, and everyone who had ill intentions towards him was slapped in the face by him. Ji Yoo originally wanted to be the protagonist's younger brother with peace of mind, and watch the protagonist's life unfold while having nothing to do. But he didn't expect that he was already deeply involved in the plot's calculations from the moment he opened the door while half asleep.
(Anyway, anything that happens to the protagonist is possible, and he has the attribute of being a heartthrob, so he's awesome)
Motto: As long as you have a good attitude, you will be a big boss