As a Family Member of Rias Gremory
The competition in the Rating Game is getting heated. Can Team Gremory keep their cool and prevail, or will Issei be undone by a strip show?
Aired 19/06/2018EP 11 - As a Family Member of Rias Gremory

2018
High School DxD HERO
Issei and the 2nd years attend a class trip to Kyoto for well-deserved relaxation, leaving the senior and junior class students of the Gremory family behind. However, once there, they fall under attack and must win without Rias or their other powerhouses.
(Source: Anime News Network)
Note: Includes episode 0, Taiikukan-ura no Holy.