Wait till he finds out that his family is a group of long line of magi in the cutthroat moonlit world with several world ending calamities sleeping in the background. Not to mention a possible 'Evil Goddess' stepmother who definitely knows their 'secret'. Poor bloke won't know what hit him.
Why is he so greedy for her divinity? not like he can use it as he needs to buy a divine spark for himself that will match him.. also, her fate and world is messed up, he didn't have a reason to screw her up even more.. he could have just bought her unwanted "pleasure" skill..
What would be the triggering mental images for Aquamarine and Ruby to awaken their magic circuits? And would they be an "Average One" like the MC or have different elements and origins?