I Became The Tyrant’s Secretary is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

I became the secretary of a tyrant in place of my clumsy brother to survive. But I have so much potential for it. I’m so darn good at my job. Because I served the tyrant so well, ‘Everyone has a happy ending’. Well then, shall I quit being a secretary and live a leisurely life now? “Rosaline, tell me what you want.” He asked as he stepped down from his chair. “I want to quit.” His eyebrows twitched slightly. “Do you want to die?” Your highness, you never hold on to people who want to leave, so why’re you being like this to me?