ice dragon king (high school dxd harem x OP male oc x multiverse harem)

What if Grayfia wasn't married to Sirzechs but married to someone else? What if her husband is human/dragon hybrid and the species of dragon is an ice dragon? Well Toad Skywalker IS that ice dragon. More likely the king of ice dragons. Grayfia was saved from an abusive relationship with her ex husband Sirzechs and left with their son Millicas and then remarried the ice dragon king Toad Skywalker. And since Grayfia is so understanding, she's letting her husband have a harem.