Monkeyboy

yes! I spent half an hour on it with no luck

Hi, I watched an anime years ago but can't remember the name. All I can remember is the protagonist is a child/teen, and is dropped into a low tech world. At some point, there is a several years time skip, we find our protagonist but he is now an adult. And he has an energy weapon that emenates from a hilt, sort of like a lightsaber. I think it was just the one season Would appreciate any help, Thank you so much!