Series: UTAU - Rental Rei-chan's Ups and Downs Diary (moyoko3)

Original title: レンタルレイちゃん興亡記

A doujinshi by the artist Moyoko, initially published for Comiket 101 in December 2022. Later republished on the artist's Twitter account in its entirety on April 14, 2023. The manga concerns Rei-chan's money problems and the steps she takes to solve them, leading to absurd consequences.