Yes, Master Otto

The blond young nobleman works through various files on the screen and reviews different experiments. Beside him, an orange-haired girl waits obediently.

Whenever he gives an order, the orange-haired girl smiles faintly and says,

"As you wish, Lord Otto."

P.S. There is no protagonist, or rather, there are multiple protagonists. Don't get hung up on it.

P.S. I'm a newbie practicing my writing, so please be kind.

P.S. He isn't a Master from FGO. I just took a shortcut because the protagonist is set up as an evil character.

P.S. This book takes a more serious approach.