[quote=@Octo]
Would a Youkai that doesn't particularly want to hurt anyone be acceptable? I was thinking of a ghost that mostly makes a nuisance of herself and enjoys scaring Humans. More of a trickster than a threat.
[/quote]

Depends on what you mean by acceptable.

If it's as a character in the RP as a neutral party, it's possible since there are Demons that don't want to bring harm to people. If it's as part of the DHA, it's unlikely because they are a human organization, any Demon assisting them, would likely have to be contracted.