User blog comment:Lamango/Check out who I found in this Rebirth of Mothra book about Dagarha/@comment-25285745-20160204172015/@comment-25285745-20160205052451

Yes, but do we know for sure it's an official book? I just find it a bit surprising that some Ultra kaiju appear in it. I thought it might be possible that it's some fan-made story with some artwork added in.