Of course everything's been done already, There's literally a LN with the premise of the MC getting reincarnated as god damn water in a hot spring. Filled with busty girls of course. To quote JonTron, I WISH I had the talent to make this shit up
Once again I fell down the martial arts rabbit hole and am plumbing the murky depths of the internet's various martial arts and fighting crafts echo chambers.
If you're not actively involved and only get up to speed every few years or so, you can see the tide of public opinion flapping worse than my dong while I'm skipping naked down a hallway.