A 22-year-old programmer named So-and-so was working overtime and drinking coffee when he accidentally spilled it on an electrical outlet. He was electrocuted and transmigrated into the body of a spoiled young nobleman.
His predecessor was a wastrel who had fought with the Prime Minister's son over a courtesan. The Prime Minister's son kicked him down the stairs, leaving him on the verge of death.
His predecessor was 20 and so notorious that he was still unmarried. His father was a Vice Minister of War, several ranks below the Prime Minister, and didn't dare cause trouble at the Prime Minister's residence. With his only son on the verge of death, he was frantic.
So-and-so arrived in this world with a mission System. His first task was to grope his sister-in-law's butt, for 100 points.