I’m a Veteran Reader in a Slump. Looking for Ultraman Fanfiction, Please Read the Requirements Below

I'd like to read something like *Ability User Sakata Gintoki*. Male-oriented, with a male protagonist on the side of justice who is an Ultraman and embodies the Ultraman spirit. No pranksters, harems, or overpowered protagonists. Ideally, no female lead or romance. No Reionics. Good writing, and a logical plot...