Toriel had finally finished her project, but there was one small hitch. You only wanted to help, but now rumor has it you had other motives. It doesn't help that Sans is back and he's not helping you put those rumors to rest. Which are unfounded, of course. You would never-and even if he DID-Well, it's useless to argue with monsters who have already made up their minds. M for smuts

What happens to Lucy when Zeref stumbles upon her during a mission. Zeref X Lucy.