Hoshi started playing the piano at the age of 6, then the guitar as a teenager. Passionate about Japanese culture, she chose the stage name Hoshi which means "star" in Japanese. In 2013, she was spotted as a teenager by the casting director of the TV show The Voice thanks to her covers on the Internet. She passed the auditions, but decided to stop the experience when the production tried to impose a song on her. The following year, she tried her luck on the show "Rising Star" on M6. For several years, she tested her compositions by playing in the street. A composer and singer with a rock voice, she identifies with artists such as Serge Gainsbourg, Catherine Ringer and Janis Joplin.

Luck smiled on her when she was contacted by a manager who allowed her to sign with the label Jo & Co. Her first single "Comment je vais faire" was released in March 2017, followed by an EP of the same name which contained three unreleased tracks, "Manège à trois", "En gros tout est gris" and "Parking sonne". She came back at the end of the year with a new song "Ta marinière".

Now 25, the French singer-songwriter has already released three albums: "Il suffit d'y croire" (2018), "Sommeil levant" (2020) and "Étoile flippante" (2021).