Rias's favorite pawn (high school dxd harem x OP male oc x crossover harem)

You may ask yourself: "how did my life turn out like this?". That's the question Toad Skywalker asked himself after he met his master and girlfriend Rias Gremory. He was just a normal high school student wanting to live a normal life but fate had other plans for him as he was attacked by a fallen angel but was revived by Rias as her new pawn. But as soon as he was getting used to being a devil, he noticed Rias being clingy with him. This is because she's in love with him, just like every other girl in the supernatural world.