Talk:Kenkou Cross Q&A/@comment-26485360-20150704210438/@comment-12776-20150705034828

Most likely limited to monsters.

I think girls "playing" with boys is just lesser concern (especially in young kindergarten class), really young mamono are just really young kids. What's truly trouble some is all DE from mamono gather in one place which can corrupt human kids.

Possible even more important, mamono are much stronger than human, and kids fight all the time. I don't think anyone want to see what would happen when a dragon pup maul her human playmate out of anger. Although I may think too much here, Yuki-warashi has no problem playing with human kids anyway.