Dragon Hopper fan game

Found something unusual and pretty cool. Youtube user “Banda Virtual” has posted a video describing a fan game based on Dragon Hopper. The description contains a link to a ROM download.

It’s all in Spanish, but apparently, from what I understand, he created a Game Boy adventure game with custom sprites based on Dragon Hopper using GB Studio, then wrapped that GB ROM in MK’s Game Boy emulator to produce a ROM that can be played on Virtual Boy.

ROM attached to this post.

It’s a novelty that a game has been produced for another system, but with the Virtual Boy as the sole target system in mind, through emulation. I wonder if I should treat it as an actual Virtual Boy homebrew and include it in the homebrew database. Or would it be a whole new category? What do you guys think?