Aru.

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Began their music activities over the internet from March 2018, where they began mostly posting cover videos under the name Aru.

After a while under the moniker Aru, they began assuming the name Mitei no Hanashi in September of 2019, when they first posted their original song named End of Reunion to the Mitei no Hanashi YouTube channel.

They first debuted in anime singing the ending theme to the anime Peach Boy Riverside in July 2021, which was then followed up by their reappearance in the anime Dragon Quest Dai no Daibouken in May 2022.