Tensura Season 4 Episode 23 Explained: Granville's Hope and the Fall of Sariel
Full spoilers for That Time I Got Reincarnated as a Slime Season 4 Episode 23, 'Granville's Hope.' If you haven't watched, stop here.
That Time I Got Reincarnated as a Slime Season 4 Episode 23, "Granville's Hope," aired Friday, September 18, 2026 — the show's 95th episode overall, and a direct continuation of the cliffhanger Episode 22 left behind about whose souls are actually trapped inside Chronoa. Where the previous episode was built around a three-way containment fight, this one splits its runtime three ways: a rescue attempt, a champion's duel, and a demon lord's reckoning with a human who dared to reach beyond his station.
Picking up the rescue thread
Episode 22 closed with Hinata's soul confirmed inside Chronoa alongside Chloe's, after a full season of ambiguity about who — if anyone — actually occupied that body. "Granville's Hope" opens by treating that confirmation as the start of a new problem rather than the end of the old one. Rimuru turns his attention toward actually restoring, or at least reaching, the consciousness of both Chloe and Hinata while they remain trapped inside Chronoa. That's a meaningfully different task from the fight the show just spent an episode on. Containing Chronoa was about keeping her from doing damage without landing a killing blow; reaching Chloe and Hinata is about somehow making contact with two minds buried inside a body that isn't behaving like either of them.
To attempt that, Rimuru brings Shizu's mask into the effort as part of his method for entering Chronoa's mind. Shizu Izawa has been threaded through this entire arc as a kind of connective tissue between Chloe, Hinata, and Chronoa's own fractured identity, so it tracks that an artifact tied directly to her — the mask — would be the tool Rimuru reaches for when trying to navigate whatever's left of that shared mental space. It's also a quiet callback to how much this season has leaned on objects and relationships from Rimuru's past rather than brute force to solve problems that brute force clearly can't touch.
A revelation worth treating carefully
Here's where the episode gets harder to pin down with confidence. Based on currently available reporting — drawn from a single account of how the episode closes, without independent corroboration elsewhere — "Granville's Hope" reportedly ends on the suggestion that reaching Chloe and Hinata may not actually be possible. If that's accurate, it would be a genuinely dark turn for an arc that's spent three straight episodes building toward the idea that both souls could still be recovered. But given that this detail comes from a single source rather than something corroborated across multiple accounts, it's worth flagging here as a likely but unconfirmed note rather than settled fact. Readers should treat it as a strong possibility the show is building toward, not something that's been definitively shown on screen and independently verified.
If it holds up, it would also explain why the episode spends the rest of its runtime pivoting so hard toward a completely different conflict — as if the show itself is acknowledging that the soul-rescue thread has hit a wall it can't resolve in a single episode, and needs to let two other storylines carry the weight instead.
Shion and Ranga against Razul
The episode's second major thread is a fight that's been corroborated across multiple sources: Shion, fighting alongside Ranga, takes on Razul, who's established as Granville's champion. This is a straightforward power-escalation battle in the way Tensura tends to write its side-character showcases — Shion and Ranga both trigger evolutions over the course of the fight, and the combined result is enough to take Razul down.
It's a good showcase for a pairing the show hasn't always given equal weight to outside of group battles. Shion has spent most of the series as Rimuru's fiercely loyal secretary and one of his strongest Kijin, but she doesn't often get a dedicated one-on-one spotlight the way some of the other Ten Great Powers do. Putting her opposite a named champion, and letting both her and Ranga level up mid-fight rather than simply winning on existing strength, gives the sequence some actual narrative stakes instead of functioning purely as a foregone conclusion.
Granville's awakening
The episode's title points at its real center of gravity: Granville, whose full name is given as Granbell Rosso, undergoes his own power awakening over the course of the episode. That awakening isn't framed as an external gift or a convenient plot device — it's presented as his own attempt to protect humanity on his own terms, separate from Rimuru's nation, separate from the Demon Lords, and separate from anyone else's authority over what humanity's defense should look like.
Mechanically, that awakening takes the form of his unique skill evolving into "Sariel, Lord of Hope," one of the Seven Virtues — the angelic-tier counterpart classification to the Demon Lords' Seven Deadly Sins that this franchise has built its higher power tiers around. Getting explicitly slotted into that tier is a significant escalation for a character who, up to this point, has mostly operated as a human political and military figure rather than someone competing at the level of Demon Lords and Hero-class beings. It reframes Granville less as a bystander to the season's bigger conflicts and more as someone actively trying to claim a seat at that table, on his own initiative, in the name of protecting the humans under his charge.
The duel with Luminous
That awakening doesn't happen in a vacuum — it leads directly into the episode's climactic confrontation. Empowered with his new Sariel-tier abilities, Granville faces Demon Lord Luminous Valentine in a duel set in Lubelius, her own domain. Given everything the show has established about Luminous across this season — her age, her history, and the sheer scale of power she's shown even in supporting-role moments — a newly awakened human going up against her on her home ground reads as an enormous mismatch on paper, regardless of how significant "Sariel, Lord of Hope" sounds as a title.
That mismatch plays out as expected: Granville is ultimately defeated by Luminous. What makes that outcome worth sitting with rather than treating as a simple loss is the framing the episode builds around it beforehand — this isn't a villain getting cut down for shock value, it's a human leader who just spent the episode trying to seize power on his own terms specifically so he wouldn't have to rely on anyone else, running headlong into a demon lord who represents exactly the kind of overwhelming, established power he was trying to catch up to. Whether that defeat ends his arc for this cour or sets up something else in the finale isn't something that's been confirmed yet.
What this episode confirms and doesn't
To be clear about confidence levels here: the title, the September 18, 2026 air date, and the basic shape of all three threads — Rimuru's rescue attempt using Shizu's mask, the Shion-and-Ranga fight against Razul, and Granville's awakening into Sariel followed by his defeat against Luminous — are corroborated well enough to be treated as solid. The one piece being handled with real caution is the suggestion that reaching Chloe and Hinata may not be possible, which traces back to a single account of the episode's ending rather than multiple converging sources. No manga or light novel chapter is being cited as this episode's source material, since nothing in the available reporting confirmed a specific correspondence.
It's also worth being explicit about what's not in this piece: no formal critical review from an outlet like Anime News Network or a comparable publication turned up covering this specific episode, so there's no reception coverage to summarize here beyond that absence. That's a genuine gap in what's currently available to report on, not an oversight.
Where to watch
Season 4 continues streaming on Crunchyroll and Netflix, with Episode 23 keeping the Friday release cadence the season has held since it began.
What's next
Episode 24, titled "The Awakening of the Hero," is scheduled to air September 25, 2026, as the cour's finale. As of this writing it hasn't aired yet, and no plot details for it have been confirmed, so nothing about its content can be reported here. What can be said is that Episode 23 leaves the season with a genuinely unresolved emotional core — the fate of Chloe and Hinata's souls hanging in a possibly unreachable state, a newly defeated Granville, and a Chronoa situation that's technically been contained but not actually solved. That's a lot for a single finale to carry, and it's not clear yet how much of it the show intends to resolve before the cour ends.
The bigger picture
Three episodes ago, this arc was a question about whose soul occupied one contested body. It's since grown into a rescue mission with real doubt about whether that rescue is achievable, a champion-tier duel that doubled as a spotlight for an underused pairing, and a human leader's bid to claim power on par with Demon Lords — a bid that ended, predictably but still meaningfully, against one of the season's most established forces. "Granville's Hope" is, in a sense, a title that cuts two ways: it's both what drove Granville to awaken Sariel in the first place, and possibly what the show is quietly undercutting by episode's end, both for him and for Rimuru's chances of getting Chloe and Hinata back. Whether the finale answers any of that, or leaves it hanging into a future cour, is the question worth carrying forward.
Episode 24, 'The Awakening of the Hero,' is scheduled for September 25, 2026 as the cour finale, but hasn't aired yet and no plot details are confirmed.