That Time I Got Reincarnated as a Slime Season 4 Episode 9: Investigating the Ruins

Canon/MED

Oshimeter

7.8

46 Ratings

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EPISODE REVIEWS

Episode Context

This episode follows the tension established in 'The Groundwork of Greed,' where Rimuru uncovered signs that Mariabell may have seeded the ruins of Amrita with traps, meaning the team enters this expedition fully aware the odds may be stacked against them. 'Investigating the Ruins' moves that threat from theory to reality, grounding the season's broader conflict in a concrete, high-stakes location. The discoveries and dynamics established here are positioned to fuel the confrontations and alliance shifts that will define the episodes ahead.

Runtime24 min

Filler StatusCanon

Plot ImportanceMED

Air DateJun 5, 2026

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