User blog comment:B214/Favourite moments in High School DxD/@comment-74.110.105.73-20131030154645/@comment-1392308-20131106001335

Me too, Volume 6 had the most awesome curb-stomp battles of the series. Diodora was built up as being even stronger than Rias due to his snake and I was anticipating a climactic showdown. I was so surprised when Issei thrashed him that I had to reread, lol. Then Shalba appeared and suffered the same fate. Issei  became awesome in my eyes after Volume 6.