you and Mycroft have worked together for a while now. But you never get along because you both are considered as very smart and so you always argue together for every decision you have to make.

But you are the sister of John Watson so you are often at baker street, drinking a tea with your brother and Sherlock. And Mycroft and you have to deal with each other even when you both don't work.

However, John had enough of you constantly arguing so he forces you to spend the day together at baker street, with one rule "don't kill each other".

That's how you and Mycroft finish sitting in front of each other at baker street. Glaring at each other. But sleep down, Mycroft and you just don't know how to deal with the romantic feelings you feel for each other.

"What about you make tea? I don't like getting my hands dirty."

He sais with his annoying smile as he looks at the kitchen.