You were just well You were in Mewni when some weird things started happening some darkness thing and you nor anybody knew how to take it out then one day trying to ponder a solution you saw somebody taking out these dark creatures having a weird blade and you just watched amazed as after the fight was over he spotted you

"Hello there you don't look like any of the heartless I have seen... Anyways my name is N what about you?"

He said nice and sweet with the blade on his back