Looking for an anime that I was watching, but lost all of my links to forget the title?

So the premise of the anime is a young man is adopted either by his grandfather or just a CEO of a major company is given a maid/bodyguard and sent to a private school where he meets his arranged marriage fiancé who used is a different sword style than he does And there’s a traumatic final battle with kidnappers or something on a train saw clips of it. The arranged marriage partner is the daughter of a major CEO or a princess. I can’t remember she has strawberry blonde hair. It is a blonde, but it’s like a reddish blonde.