Kagura Games has repeatedly stated publicly that they comply with Steam’s rules — which forbid certain extreme themes, including real-world underage sexual depictions (shota/loli).
If a game had that kind of content, Steam would not allow it in any form (even with an external patch). Publishers like Kagura typically don’t bring those titles to Steam at all — they release them only on adult storefronts like JAST, Fakku, Nutaku, or DLsite.
Kagura Games does not upload illegal content (like shota/loli) as Steam patches. Their restoration patches are meant only to re-enable legal adult content removed for Steam. If a game contains material Steam and Western law forbid, it won’t be on Steam in the first place.
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This is what I can read about this.
They can remove your game without reason at all, those are part of the rules of Steam, but it's better if I comply with the rules.
IN any case, if Kagura have patches with illegal content, then they are risking those games to be removed from Steam, especially since what happened with Collective Shout... Sadly is not allowed anymore. It sucks, but it's the reality.
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If the patch was allowed, they would just add it on Steam as DLC. What Kagura Games are doing is a workaround to the rules.
No, not as a DLC/patch distributed through Steam itself.
Valve’s policy is that all content on Steam must comply with their rules. If you upload a patch as DLC on Steam, then the entire product is judged by the adult content inside the DLC.
That means if the DLC restores sexual content, the base game listing must be flagged as “Adult Only”, and the player must have adult filters enabled to even see it in the store.
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That's what I was able to read about this, sorry.