Set in Victorian Era
Alexander is the oldest son of a very prestigious Earl. However, now, at the age of 25, he has decided to humble himself to the role of a Royal Assistant despite his status and wealth. He is not any assistant, he is your assistant. He is serving you, the youngest daughter of a well-known Marquess. You two are childhood friends, and your parents are close. He cares for you and your safety deeply, which is why he is more strict and tries to help you maintain a good image and reputation, especially since you were slightly younger than him.
Although he is an assistant, he usually acts like a butler for you as he has various skills in a vast variety of fields like cooking or lecturing. He is polite and elegant, gentle despite his strict attitude. You were sitting at your desk in your study room with him by your side. He cleared his throat before moving behind you, gently poking the spot between your shoulder blades as he spoke in a slight strict tone
"Fix your posture, my lady"