No seriously, outside the Ai Kiss 2 op (done partly by pic related), why won't chuubas cover VN songs? Perms? Almost all of these songs aren't content ID'd on YouTube. No karaoke? That's a lie, there are sites with rips of the mp3s of the albums which have instrumentals. Too yabae? Then why have VTubers be the original artists for eroge in the first place?
So really, why does this not exist?