Im sorry but i have to step into this license conversation because it seems that most people miss the point.
Software licenses are a bit different than other licenses that are used on most forms of content. This is because licenses which require the author and the users to distribute it by having the source code open to the public are extremely popular. The most popular ones are the Gnu General Public License and the MIT license which both say that the program must include its source code in some way so others can fork it, mod it, or study from it. Having said that ren'py like most other open source projects uses MIT license with LGPL and this is the reason why game developers dont have to pay a license fee to some company for using ren'py. People in charge of ren'py could sell their program but it wouldn't mean much since everyone can compile the source code themselves instead of buying it. For this particular game i had a look into the files and just like i said, files that were included from the ren'py engine are all under the MIT license which is expected, and to my suprise oni actually added his own license for the content he himself produced, which he is perfectly allowed to do so. Normally for a project like this most of the engine would be licensed with LGPL or MIT and the code written by the developer would be licenses under a proprietary license so their game cant be distributed elsewhere. So i expected that the artwork oni draw and the code he written would be under a copyright protecting license but it seems that he didnt put much though into it and chose to write his own license which sits at the game folder named as "Disclaimer and License.txt". In the license it does indeed say that the distribution of this software except on the hentaiverse site and his patreon is strictly forbidden, but since that's the only thing mentioned you guys are alright. Since his "license" literally consists of two lines and doesn't go over stuff like forking, the source code, and selling you guys are fully allowed to consider these things to be allowed. So in conclusion since his license doenst say anything about forking you guys can change a single line and call it the "F95 fork of Rogue Like" and host it anywhere you like. You can also re license this fork and make the whole thing, including assets and the code, and make it licensed under GPL. So yeah Oni has no legal right to demand F95 to take his game down, not because he uses marvel characters likenesses because that can easily fall under parody laws, but because he didn't think much about this and forgot to properly license his game.
I could be totally wrong though since there could be another file within the game that fully declares the game as Oni's copyright, but considering that the game doesn't make us agree to any kinds of terms and conditions that's probably not the case.