I want to mention a hentai artist named Juna Juna Juice who creates both original & doujinshi hentai manga (My Hero Academia and many others).
The MHA hentai series is absolutely amazing.
The characters are very detailed and also has fan theories about how certain quirks work (mainly Mina's Acid Quirk).
I hope to see JJJ's work on FAKKU someday.
Here a link to the artist's Twitter account.
https://twitter.com/junajuice?s=20