Story:You did a genocide route and flowey decides you became too evil so he tries to stop you using a power called:Scratch programming! To make himself more powerful.
Credit to pococikapusta who has pusta in his name which reminds me of pasta which reminds me of spahgetti which reminds me of papyrus which reminds me of NYEH HEH HEH (long story short pococikapusta laughs like this:NYEH HEH HEH!)