High School DxD Episode 12: I`m Here to Keep My Promise!
Episode 12 of 12 of High School DxD, aired March 23, 2012, 25 minutes. Available with English subtitles and dub where released.
Episode summary
Issei wakes up to find that the battle is over, and he has lost. Rias and the others are at a party in honor of her engagement to Riser, but with some help from Grayfia and Asia, Issei decides to crash it, rescue Rias, and bring her home with him!