Honestly? It's a niche enough tag that you kinda have to dig a little deeper than the obvious sites. The straightforward answer is Archive of Our Own (AO3). The tagging system is a lifesaver for pairing-specific stuff like Naruto/Goku fusion or whatever wild crossovers people are building, and you can filter by completed works, word count, and kudos to find the well-regarded ones. I've stumbled on some surprisingly intricate world-building under the 'God of Destruction' tag there, with authors really playing with the cosmic hierarchy from 'Dragon Ball Super' and mashing it up with chakra systems in ways that shouldn't work but sometimes do.
That said, the real treasure hunt often leads to smaller forums or dedicated Naruto fanfiction archives like FanFiction.net's Naruto section, but you gotta use the search bar like a pro. The tag isn't as standardized, so you're looking for summaries with phrases like 'OP Naruto,' 'Divine Naruto,' or 'Transcendent Naruto'—those often dip into that power-scale territory. The quality can be super hit-or-miss though; you wade through ten stories of pure power fantasy for every one with a decent plot. I once followed a massive, abandoned epic on SpaceBattles that had a whole thread debating the logistics of Hakai versus Truth-Seeking Balls. So, forums are great for the discussion and the really experimental, in-progress stuff, even if it's less polished.
My personal method is cross-referencing: find a promising title on FF.net, then check if the author cross-posted to AO3 for a cleaner reading experience and maybe extra author's notes. Sometimes the best ones aren't even tagged 'God of Destruction' explicitly; they're buried in broader 'crossover' or 'alternate universe' tags. It feels less like visiting a single platform and more like following a trail of breadcrumbs left by the fandom.