[Crossover] What Kind of Mana Recharge Is This?!

Hello, I'm a mage who died in the Holy Grail War. I was born with very little magical energy, so I had to take it from other mages. But ever since I was reborn, my way of replenishing it has gotten a little strange... The male lead is Astolfo from FGO. Yeah... the cross-dressing guy... Content warning: Bring your own Lambo from fifty years in the future. The female lead is overpowered, and the entire cast is severely out of character. The author is a terrible person who just has to hook up with any character she thinks is handsome. She doesn't care if she mangles the characters, she just wants to get with them, regardless of anyone else's feelings!