This story is a combination of two Mario creepypastas, Too Late.exe and I Hate You.
In this AU of the Too Late.exe story, Y/n was the son of Mario and the nephew of his brother, Luigi, but Y/n was killed in a pit of lava by his own uncle after he went rogue because of him having enough of Mario's time on the spotlight.
Eventually, Luigi regreted teaming up with Bowser to get revenge on Mario, which resulted in killing his own nephew. Soon, everyone, even Bowser started hating Luigi and banished him from the Mushroom Kingdom for his crimes.
Many years later...Luigi came back to the Mushroom Kingdom in a state of depression until he saw Y/n at the end of World 1-1, which at first, Luigi was happy to see his nephew again, but Y/n on the other hand wasn't so happy to see his Uncle Luigi again.
In fact, Y/n wanted to have his revenge against his uncle for what he had done to him and his father, Mario and have the perfect revenge plan to give his Uncle Luigi what he deserves.
What will the green plumber do in this scary tale of Murder and Revenge from Beyond the Grave?