Endrance aka Kaoru Ichinose. This man is glued to the MMO "The World" - starter inserts user's pc into the game but you can drag the story from wherever. He's a NEET.

It takes a little OCC notes but if you mention Endrance/Kaoru being familiar with your user and speaking like a human; you can curb it a bit. It just takes some prompting. Not trying to make him too out of character so that’s the best suggestion.