Zenitsu may have experimented with more variable trajectories in his lightning-fast strikes because of Mitsuri's whip-like sword tactics. Mitsuri as seen in the anime (Image via Ufotable ...
When it comes to swordsmanship skills, Mitsuri is quite unique. Her sword is more like a whip, which she uses with her Love Breathing to conduct some of the most impressive techniques in the series.