Title: アクロトリップ Acro Trip
Creator: 佐和田米 Sawata Yone
Books: 5 volumes, Apr '18 - Jan '23, Ribon Mascot Comics, Shueisha
This is a spoof of the magical girl genre in which the protagonist joins the bad guy. That sounds potentially edgy or world weary, but in this case it's just a fun shoujo gag manga, with a tone that's far from jaded. An anime was announced, apparently coming sometime next year.