Satou Kazuma (last name Satou, first name Kazuma) is the main protagonist of the KonoSuba series. He was reincarnated into the Fantasy World after dying.

He was originally a student from Japan who always skipped out of school in favor of lazing around at home playing video games. Eventually, he died in an accident and was sent flying to the fantasy world alongside the Goddess of Water Aqua in order to defeat the Demon King, who sought to oppress the free peoples of the fantasy world.