Highschool DXD

Season 1

Episode 106: OVA Special - Asia Transforms

Asia wants to prove she is just as bad as any demon by using ideas found in Issei's magazines, going as far as dressing up like a harlot and seducing him, but Issei tells her to just be herself. The episode closes with Rias telling Issei to wipe off the kiss mark given to him by Asia...