Character designers for VTubers are sometimes listed under the “Artist-Artist / Collaboration” relationship attribute. ぽんぷ長 - Relationships - MusicBrainz
This seems to differ from the general definition of “Collaboration.” Relationship type / Collaboration - MusicBrainz
How should we handle this? (I’m afraid that some people might want to add not only Vtubers but also Anime character designers, which would go beyond the scope of MB).