That Time I Got Reincarnated as a Slime Season 4 Episode 9 has arrived. The episode, titled “Investigating the Ruins,” aired on Friday, June 5, 2026. It advances the ongoing conflict involving Rimuru Tempest and the growing threat from the Rosso family.
The episode focuses on exploration and rising tension as Rimuru’s team delves into ancient secrets while external dangers close in.
Episode 9 Release Time and Streaming Details for Global Fans
The latest episode of That Time I Got Reincarnated as a Slime simulcast on Crunchyroll alongside Japan’s broadcast. Here are the approximate release times:
- United States (West Coast): 7:00 AM PT
- United States (East Coast): 10:00 AM ET
- United Kingdom: 3:00 PM BST
- India: 7:30 PM IST
- Australia: 12:00 AM AEST (June 6)
- Japan: 11:00 PM JST (NTV’s “Friday Anime Night” block)
Crunchyroll streams “That Time I Got Reincarnated as a Slime” in North America, South America, Europe, Africa, Australia, New Zealand, the Middle East, India, and additional territories, with Japanese audio and multi-language subtitles.
What Happened in Episode 9: Ancient Ruins and Rising Threats
Rimuru Tempest and his companions arrive at the ancient ruins of Amrita, located beneath the former castle of Demon Lord Clayman. The group explores the site, examining magical formulas, murals, and remnants of an old Elven paradise.
Their investigation proceeds smoothly at first, revealing backstory details about Kagali and the history of the region — including how it was once destroyed, forcing its people to relocate. However, the ruins’ defense system suddenly activates, attacking the research team.
Meanwhile, Mariabell Rosso makes her move. Tensions escalate as she confronts Rimuru directly, with connections to the larger conflict involving the revival of a powerful entity tied to Milim Nava’s past — the Chaos Dragon (formerly her pet Gaia). The episode builds anticipation for major confrontations ahead.
Rimuru Faces Political and Supernatural Dangers
Rimuru continues navigating threats from multiple sides. The Rosso family’s schemes, led by figures like Mariabell, aim to counter Rimuru’s growing influence and vision of coexistence between humans and monsters. The ruins exploration provides crucial lore while the Chaos Dragon storyline adds emotional weight due to its tragic link to Milim.
Fans appreciated the blend of world-building, character backstory (especially around Kagali and ancient societies), and the calm-before-the-storm atmosphere that shifts into high-stakes moments.
Fan Reactions to Episode 9
Viewers praised the episode’s animation during the ruins sequences and the deeper lore reveals. Many noted the strong setup for upcoming battles and emotional payoffs involving Milim and the revived dragon. Reactions highlighted Studio 8bit’s work and the escalating chess match between Rimuru and Mariabell.
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Where Season 4 Stands Right Now
That Time I Got Reincarnated as a Slime Season 4 premiered on April 3, 2026, and continues its weekly Friday releases. The season features multiple course as it adapts further light novel material.
Upcoming episodes in June 2026 include:
- Episode 10: June 12, 2026 – “The Master of Greed” (or “Demon Lords’ Banquet ~Walpurgis~” in some listings)
- Episode 11: June 19, 2026
- Episode 12: June 26, 2026
These episodes are expected to dive deeper into the Walpurgis meeting, the Chaos Dragon conflict, and broader demon lord politics.
The Chaos Dragon’s Context (Light Spoiler Warning)
For those familiar with the source material, the Chaos Dragon represents a tragic figure from Milim’s past. Its revival and damaged state add layers of complexity to the current arc. Rimuru’s approach to such threats often emphasizes understanding and potential redemption rather than pure destruction.
Where to Watch
All previous seasons, movies, and OVAs are available on Crunchyroll. New viewers can start from Season 1, while returning fans can catch up easily on the platform.
Also Read: Rent-a-Girlfriend Season 5 Episode 9 Shows Kazuya and Chizuru Finally Texting Like Real Friends
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