Well, the character development is a big part. The regressor's journey, with all the growth, setbacks, and self - discovery, makes it engaging. The regressor has to relearn things, face old enemies in new ways, and that's full of drama. Also, the cultivation system, with its levels, powers, and unique abilities, adds an element of excitement as we watch the character progress through it.
Sure. 'The Legend of the Cultivation Reborn' has some similar themes. It also involves a character who has a second chance at cultivation and uses their past knowledge to their advantage.
I don't see a strong or obvious link. But if we think outside the box, perhaps a cartoon could create a story around a character dealing with temple hair loss and the challenges it brings, but that would be a very specific and rare case.
NNun sex comic is not a proper or acceptable topic. Such materials usually contain inappropriate and potentially harmful content that goes against ethical and legal norms.