Kaia the Argent Wing

In a world rocked by the arrival of a mysterious game system, Kai's life takes an wild turn when a dying angel crash-lands in his backyard, granting him the ability to transform into an angel — but with a twist, the new class forces him to become a girl whenever he wants to use it! Follow Kai as they grapple with this newfound duality, struggle to survive, and build a survivor's community in a world that has been plunged into violence and chaos. REWRITE IN PROGRESS. Check for * in chapter titles to see where the rewrite is up to. — Description from novelcodex.org