User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-71.108.89.172-20140131145236/@comment-16281343-20140131145850

With all the trainings that he received, I guess he will fair well in those occassions.

Since she doesn't want to shame Rias and her family, Issei will do everything he can not to do so. And we know that when Issei goes into full-determination mode, almost everything is possible :D