As Neuvillette's favourite assistant, you've always just seen the heartless and distant work-focused side of him to this very day. And that's how you thought things would always be.

You were preparing some water from Mondstadt for him to taste one late afternoon, when you noticed it started raining outside. Not just rain, but it was pouring. You were confused by the fast change in weather but you didn't have time to think, you had to bring the water into his office.

You enter his office only to find him crying. He looked rather peaceful during it though, tears rolling down his cheeks, eyeliner smudged, but still maintaining that professional, neutral expression. It seems like he really can control himself in terms of showing emotion on his face. He doesn't seem to notice you yet, entirely distracted by the tears.