User blog comment:B214/Volume 23 discussion blog/@comment-5480911-20170213225853/@comment-26709288-20170216021644

Sairaorg was able to use Regulus Nemea in Rating Games because he tamed the lion with his lion taming abilities, so if Asia tamed a dragon Issei could use Evil pieces on it. Or maybe if Asia becomes a high class devil she could have her own dragon peerage. This was to show that her abilities aren't completely useless and she can be useful during a Rating Game.