Summoning

Issei Hyoudou, a brown-haired, easy-going, freedom-loving guy who loves adventure! What happens if Rias Gremory summons him to assist her in a rating game that would decide her future?

High School DXD and Sonic The Hedgehog belong to their respective owners.

The art belongs to JasonGoldFalcon on Reddit, until I can draw it myself (probably not for a while), it will be a placeholder.