"Cœur papillon" is the reissue of "Cœur parapluie," including 5 unreleased tracks, the 2 singles "Puis t’as dansé avec moi" and "Je partirai" in an unplugged version, and an extended version of the song "Mauvais rêve," in which she reflects on her last year and looks ahead to the next: her 28th birthday. Hoshi delivers new songs that are just as personal and reveals her questions, her pains, her doubts, and her hopes.