Flower Fairy: The Hollow Heart

My name is Xia Guang. I thought my life was perfectly ordinary and uneventful. I might have believed that, if my little sister and I hadn’t each suddenly gained a guardian spirit one night. Why should my sister have to bear all the messed-up fate spun by that dead tree called the Tree of Skies and that rotten book called the Flower Codex… Oh, I’m in it too? Well, never mind, then. (If you don’t want to read the Hollow Knight content, start from Chapter 22.) (One female lead.) (The villain from beginning to end is the Demon God of Darkness, the immortal old dog Mephisto.) (The worldbuilding is a mash-up of Flower Angel and Hollow Knight. I’ll decide later whether to bring the Pony Kingdom into it.) (There are three protagonists. Xia Guang is Xia An’an’s older brother. Qian Kong is Qian Han’s older brother. Levitt is the second son of Carmona’s head of state.)