Are there usually no repercussions by selling porn games from big mainstream franchises such as Dragon Ball or Naruto? Technically all these chars are intellectual property or does that not exist in Japan?

Was curious if anyone knew.
I'm pretty sure hentai games that are based on a Japanese IP fall under a similar category to Doujinshi's
Many
doujinshi are
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that are produced without the permission of the original creator, a practice that has existed since the early 1980s.
Doujinshi are considered
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under
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, meaning that
doujinshi creators cannot be prosecuted unless a complaint is made by the holders of the copyrights they have violated. In 2016, then-
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affirmed that
doujinshi "don't compete in the market with the original works and don't damage the original creators' profits, so they are
shinkokuzai." Copyright holders take an unofficial policy of non-enforcement towards the
doujinshi market, as it is seen as having a beneficial impact on the commercial manga market: it creates an avenue for aspiring manga artists to practice, and talented
doujinshi creators are often recruited by publishers. Salil K. Mehra, a law professor at
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, hypothesizes that
doujinshi market causes the manga market to be more productive, and that strict enforcement of copyright law would cause the industry to suffer.
That excerpt was taken from a Wiki.