kuoh's evolved (high school dxd harem x OP male evolved oc)

What do we know about Rias Gremory? She's a high class devil and heir to the Gremory family but what if we were to tell you that she's also married? Yep Rias Gremory is married to the son of Alex Mercer, Toad Mercer. She met him when she was on a trip to America with her mother after her father died through mysterious circumstances. ever since then, Rias and Toad got married and decided to go back to Japan. But things get crazy as some of the girls start falling in love with him.