Lunaria: Virtualized Moonchild is a Japanese science fiction visual novel developed by Key, a brand of Visual Arts. It was released on December 24, 2021 for Windows and is Key's 17th game overall. It was ported to iOS and Android devices. The story follows high school student Tabito Kamishiro, known as T-bit when playing the virtual reality racing game Skyout, which earns him an income in the form of prize money. One day, he wanders onto an unknown server on the Moon and meets the AI avatar Lunar-Q who earnestly wants to see the Earth herself.