Still one of the best anime series I've seen in a long time and the animation shows that Ufotable still has an unlimited budget!
The sound Hashira Tengen Uzui is one of the cooler Hashira's that were newly introduced. He's definitely weaker than Rengoku but this dude is winning/losing with 3 wives. This arc also showcased Nezuko as a more developed demon compared to her previous kid form.
It also shows how powerful she's become and how her Demon Blood Art flames can damage and heal poison.
The rest of the main 3 cast are still doing cool stuff and helping Uzui while on the brink of death when fighting Daki the Upper Rank 6 Demon.
Going to go read the manga and to see what happens next before the next arc airs.