User blog comment:B214/High School DxD BorN Episode 10 Review/@comment-26473732-20150607125550/@comment-26209278-20150607133834

No, the NTR didn't happen. This is anime-original content. And yes, filler to get to the final fight, which im guessing is going to be Issei vs Issei. Next episode will be Issei getting Vali to help him, and finding Rias in the DG, or at least im assuming.