Mueller et Olivier XD

http://www.pixiv.net/member_illust.php?illust_id=40707794&mode=medium

http://www.falcom.com/info/secret_giftwp/happynewyear/2014.html

http://esteriadiary.wordpress.com/2013/12/25/nueva-informacion-de-la-secuela-de-sen-no-kiseki-y-de-ao-no-kiseki-evolution/