Mushoku Tensei - 10
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Pros: Eris having the time of her life, while also being wistful and showing that she does care about her grandfather and Ghislaine (who she is especially worried about). The new demon lands city is beautiful, vibrant, and they're really showing us the diversity and promise in the world building.
Cons: The Ruijerd storyline. Zzzzzzzz.
Bad stuff first then. The Ruijerd storyline is suddenly and abruptly completely boring as shit. I don't care how you want to count Mushoku Tensei as the "godfather of isekai" the whole, 'You mustn't kill! Even the bad guys!?' plot thread is so old and trite at this point it's not even interesting.
Mushoku Tensei started in 2012/2014, and this trope was old in anime THEN. It was old in 1992 for Terminator 2. It was old in Dragon Ball. I'm honestly not even interested in seeing what (if anything), the series will attempt to do as a different spin. I feel like I've seen every possible iteration of the trope already, and it isn't even an interesting or compelling one to begin with.
Onto the good stuff. The backrounds are gorgeous. Eris doing a death dance fight, and so causally confident in her abilities that she doesn't even pay attention to the others is fascinating. Sounds like we're first-hand witnesses to the next great Sword King. There's an effortlessness in her swordplay, like she's not holding back against Rudeus in practice, or if she idly worries about hurting Ghislaine. Not that she probably could. But her abilities seem to have directly ramped up
Her confidence is contrasted nicely with her continued fury, frustration, and that little hint of homesickness. She's loving every minute of this adventure, except at nights. Her loose cannon behavior because she's can't understand the language might drive her to study from Rudy even more, which could be good.
Eris facing down the furious Ruijerd was the sole interesting spot in his boring-ass half of the episode. She's not afraid of anything, but she does learn. Beating up the other adventuring party in the inn lobby was something she took to heart. Her temper is hiding her mild homesickness, and she used a lot of what Rudeus has been poking at her over the years back on Ruijerd.
The city is also beautiful. I love the wall designs, the weird castle in the center, the building stacked up in every corner out of the weird bowl the city is in (very much like Deca-dense's was or something out of a Ghibli film). There's a depth and variety of the demon-folk too. From the asshole Bojack guy, the ultra chill innkeeper, the timid lizard and bug lady, and the dorky other adventurer party.