That Time I Got Reincarnated as a Slime

Investigating the Ruins

TV-14
S4 • E9    Jun 5, 2026    24m
8.18.7
Rimuru and his friends arrive at the ancient ruins of Amrita. The group was proceeding with the investigation smoothly, but suddenly the defense mechanism of the ruins was activated and attacked the research team. Also, Mariabell appears.

Where to Watch That Time I Got Reincarnated as a Slime - S4 • E9

Cast of Investigating the Ruins

  • Miho OkasakiRimuru (voice)
  • Tomoaki MaenoVeldora (voice)
  • Takuya EguchiSouei (voice)
  • Hochu OtsukaHakurou (voice)
  • Asuna TomariGobta (voice)
  • Chikahiro KobayashiRanga (voice)
  • Jun FukushimaGabiru (voice)
  • Rie TanakaTrainie (voice)
  • Rina HidakaMilim (voice)
  • Anzu HarunoRimiris (voice)

 

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