I'm not entirely sure as 'hentia' often refers to inappropriate or adult - themed content. If we assume it's a misspelling of 'hentaï' and ignore that aspect, it could be a fan - created story in the Twilight universe involving a character named Bella. It might explore different plotlines, relationships, or alternate versions of the Twilight story with Bella as a central figure.
The characters can be integrated by having them meet in a crossover world. For example, Naruto characters could be transported to the Claymore world and vice versa. They could then exchange their fighting techniques. Naruto characters could teach the Claymores about chakra control, while Claymores could show Naruto characters how to use their yoki - enhanced weapons.