The idea is a lot of fun! I'm sure if you did another part, it'd be interesting to touch on how he's become a demon slayer. It could stoke up a little bit of drama if you had them jump to the conclusion of him being more of a monster hunter in general. They could feel lied to.
Rosariot + vampire dragon ballz goku and piccolo vs raditz goku vs nappa goku vs vegeta goku and vegeta vs ginyu force goku vs frieza Gohan vs cell goku vs vegeta majin goku vs majin buu goku vs beerus goku vs zamasu goku vs jiren gogeta vs broly AMV
The first time I watched Rosario + Vampire was when I was 6 that was 8 years ago I was one dirty 6 years old after finding those magazines and now I'm a homo who's very thirsty for spicy art and anime it's funny how a who moment changes a person but I have to be loyal for my girlfriend so I don't flirt with people