User blog comment:B214/High School DxD BorN episode 1 review/@comment-3965848-20150406162137/@comment-16281343-20150406170557

No. The Kuroka-Bikou should be after the training.

They might do a filler like announcing the enemies announcing the intent to do something -> then comes the training -> Kuroka, Bikou.

So, I don't think those two will appear next but on the third.