I would personally get rid of brown mustache, not because he has ill intentions towards Elise but he's the one who proposed the duel regardless of silver mustache provoking him.
Also, I feel for those dropping this because of the mc being overly perfect. It was satisfying during the first 40-50 chapters then it got so boring.
Yeah, she cannot play the piano or knit a sweater okay but she's so overpowered it gets annoying. This would have been the perfect opportunity to force her to make a bittersweet decision but no- guess we'll see how it goes