create implication project_diva_(series) -> vocaloid
Most posts are tagged with both tags, but it happened to me that I thought that the implication is in place and therefore the post wasn't tagged with vocaloid multiple days.
Project Diva is a game series that is only containing vocaloud characters.
EDIT: This tag implication has been rejected because it was not approved within 60 days.
EDIT: The tag implication project_diva_(series) -> vocaloid (forum #140228) has been rejected by @DanbooruBot.
Updated by DanbooruBot