These episodes are the reason why the Rakuyo arc is my personal favourite, seeing more backstory of the Joi 4 and each of them getting their time to shine is the best!
Zura is a monster. The pure damage and distruction in this fight supressed almost all the yato battles including the ones with Hosen and Kamui. Prominent for his talent and genius PLUS turns out to be the most tanky out of Joui 4.
Katsura is my favorite character. So, it's my favorites episode and fight, I think. Katsura is so cool here, I'm so happy to know his past finally. We can see too why he want absuly call him Katsura, because he is the only member and leader of this family. And when he become Zura, he forget all responsabilities and just fight. It's damage we don't see Katsura fight like that often.