Koyoi no Maid wa Korosenai

Koyoi, an assassin, takes on a mission to kill a young man living in a mansion with a butler. She plans to pose as a maid to get close to him, expecting the task to be straightforward. However, her target proves to be unlike anyone she has encountered—described as a "trashy womanizer." As their paths cross, both Koyoi and the young man begin to see each other as potential threats, setting up a tense dynamic between them.