Slime Voice Duo Still Find Rimuru and Raphael Challenging After Four Seasons
Miho Okasaki and Megumi Toyoguchi, the voices of Rimuru and Raphael in That Time I Got Reincarnated as a Slime, spoke at Anime Expo 2026 about how their characters have grown together.
1 source Aug 5
Reporting from 1 source: Anime News Network.
Why it matters
Four seasons in, the pair still do not rehearse their scenes together, so each test recording is a fresh discovery of how the other will play it.
The two actors still find the roles challenging after four seasons, and they deliberately do not discuss their approach before recording, discovering each other's choices at the test recording instead.
The series began in 2018 and is approaching its eighth year on air, and the Anime Expo 2026 panel still drew a full house. In the current arc, Rimuru is trying to create a space where humans and monsters can coexist, facing an uphill battle with the Rozzo family.
Okasaki described Rimuru and Raphael as partners who sit side by side rather than facing each other, sharing the same understanding without needing to exchange a nod. Raphael started as Great Sage, a skill that spoke in a robotic way, and has evolved into a more human presence over the seasons.
The two actors never discuss how they will play a scene before recording. Okasaki discovers Toyoguchi's choices at the test recording, and she says that moment is something she looks forward to.
Written with AI by Yomimono from the 1 cited source below, including Japanese-language reporting where cited. See our editorial policy.
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