The official website for voice actor Miho Okasaki, best known as Rimuru Tempest in the That Time I Got Reincarnated as a Slime anime series, has announced that her first mini-album “SHAKING” is set to release in Japan on July 2, 2025.
While working as a popular anime voice actor, Okasaki made her solo singer debut from KING AMUSEMENT CREATIVE with her first single “Happiness” in September 2021, releasing five CD singles, four digital single songs, and two full albums to date.
The six-song album “SHAKING” includes her fourth single song “Hapimemo” (shortened “Happy Memory”) and fifth single song “JOY!!” (I’m a Noble on the Brink of Ruin, So I Might as Well Try Mastering Magic ending theme), as well as two newly-recorded songs. Additionally, the bonus Blu-ray for the first press limited edition includes a special footage from her first project where she filmed outdoor on some location.
As reported, the album’s lead track “Shoujo no Susume” (“Encouragement of Girl”) will be featured as the ending theme for the summer 2025 TV anime Private Tutor to the Duke’s Daughter, in which she is also cast as Lynne Leinster.

First press limited edition CD jacket

Regular edition CD jacket
Miho Okasaki “Hapimemo” Music Video
Miho Okasaki “JOY!!” Music Video
Source: Miho Okasaki official website
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