User blog comment:Chichiryuushintei/High School DxD BorN Episode 5 Review/@comment-2216547-20150503103649/@comment-26209278-20150503105627

Well in the LN, unlocking his BB gave him the ability to wield holy swords (I think, or it's to d with that last crystal Balba gave him), which leads to Xenovia being jealous (kinda) of Kiba being a better wielder than she is. We didn't get that at all in the anime, all he did was hold it. Still, it's only a little nitpick