In the seemingly tranquil town of Sumairu-Urbem, you are a teacher embedded in the web of a corrupted school. A sudden twist of fate via a jarring accident thrusts you into the world of partial amnesia. As fragments of your past elude you, a cryptic relative is your only guide, though she holds her cards close to her chest.

But it's not all dark shadows and lost memories. This visual novel also offers a dazzling simulation filled with beautiful girls, each bearing their own stories and charms. As you delve deeper into the city's enigmas, you're entangled with a troublemaker girl and a persistent voice that won't leave your mind's sanctum.