Key the Steampunk Vampire Girl and the Floating Mansion

Key the Steampunk Vampire Girl finds herself living in a mysterious floating mansion filled with bewitched hallways and enchanted doors that can lead anywhere in the world. When villains take over her magical home, she teams up with friends, including a witch, a ghost, and a robot, to reclaim it. The villains' secret weapon reveals a deeper connection to Key's past, adding urgency to her quest. Ultimately, her adventure revolves around protecting her home and uncovering a significant mystery.