Sanemi gets a new Butterfly Girl and she is eager to help... he doesn't seem to like her enthusiasm at first. Will the Pillar soften to Y/N? Will they get along? Finally, how will they manage their growing feeling? Sanemi x FemReader! No manga spoilers! The story does not follow the main storyline. I do not own Demon Slayer. I do not own the art from the cover, I do own it's design.