This month’s issue of Falcom magazine keeps on giving. There’s a blurb that also teases that Akatsuki no Kiseki will be unveiling at least one character from Sen no Kiseki II [ed note: there’s no plural identifier in this, so it could be one character or more] in the month of May.
There has been no additional information regarding this character uploaded into the game’s files yet, so it can still be anyone. It could just be a special character for the gacha system, ala Mireille and Shirley in recent months.
I will do my best to report on this news when it comes around.