User blog comment:B214/Season 3 confirmed!!!!!!/@comment-76.109.26.131-20141226174333/@comment-16281343-20141229203126

You should reread the novels to refresh your memory. 1 right, 1 wrong, 1 so-so.


 * Issei and Sairaorg did had a 1v1 fight but that takes place in Volume 9 w/c is far off. Also regarding that fight in the PV, see the note I placed. -->
 * He attained Balance Breaker not by fighting Dragons but by pushing Rias' nipples.
 * Yes, he was trained by Tannin, an Ultimate-class Devil.