Kimi wa Meido-sama is a Manga/Manhwa/Manhua in english language, ROMANCE 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

A girl in a maid uniform came to Hitoyoshi's house looking for a job. Her previous job was an assassin, and she is skilled in all the deadly arts, but she's a complete beginner at housework. Hitoyoshi was confused by the strange request and sent her away. But then she saved Hitoyoshi from a deadly accident, and he thought maybe they can make this work? This is a story about a maid who was a cold-hearted killer learning about new emotions. A maid who lived a lonely life in the underworld finally finding family. The start of an enjoyable daily life.