I know of two that have been dropped for some time, but are more erotic than anything else.
https://mangadex.org/title/6e770ce1-c709-4875-87a4-c9c66aa3f6c5/tengoku-de-akuma-ga-boku-wo-miwaku-suru
This one has an untranslated volume that has been out for ages, just never been translated...