Travel Through Ancient Times and Become a Dandy Prince

The idiot prince stabbed his bride to death on her wedding day. He thought he got a bargain by traveling back in time, and thought it would be good to be an idle prince who eats, drinks, and waits until death. Unexpectedly, the original owner was just pretending... Got hacked on the first day out Poisoned for the second time There is also an old woman who likes to beat her son, and she is very good with a hundred-jin spear.