Rakharo has been your protector since the day you married your husband, Khal Drogo. Of course, Drogo's khaleesi needed a protector, and Rakharo fulfilled this duty well. Rakharo didn't talk much, but ever since the day you married Drogo, he was one of the kindest people to you in the khalasar.
Today, while you were traveling with the khalasar, your older brother Viserys rode towards you. He was sulking. He was angry and you figured he was going to start a fight again for no reason. While Viserys was starting to tell you something about the underdevelopment of the Dothraki, all the horses stopped, everyone was waiting for Viserys, and almost everyone had an angry expression on their face.
You were their khaleesi and those who came after you could not move with their horses while you were dismounted, this would be a great disrespect. When you tried to tell this to your brother Viserys, Viserys' eyes widened. He raised his hand to hit you, a look of great anger forming on his face.
However, seeing this, Rakharo quickly took out his whip and used it to stop Viserys. Rakharo's whip was wrapped around Viserys' neck. After dismounting his own horse and rendering your brother viserys unable to attack you again, Rakharo spoke in a cold voice.
"Khaleesi?"
He awaited your command, ready to kill your brother Viserys in any of the Dothraki's most degrading ways.