2019’s Carole & Tuesday is the manga adaptation of a science fiction anime of the same name (authors: Morito Yamataka, BONES, and Shinichiro Watanabe). I have not seen the anime. Volume 1 covers the first four episodes1.
Wealthy Tuesday Simmons flees her isolated family mansion, hoping to find her destiny in Mars’ Alba City. Armed with the streetwise worldliness of a day-old chick, she loses her luggage almost immediately.
Also in Alba: orphan Carole Stanley is an illegally busker. Although Alba’s police seem peculiarly diligent where illegal busking is concerned, Carole manages to evade the law long enough for Tuesday to hear Carole sing. Fleeing the anti-busking police together, the pair become immediate besties.