A student vanishes into a mirror in the old school building, bound by the laws of the supernatural.
About
After school in the old building. In the damp, heavy air of the restroom, an anomaly occurs just as you step inside as an investigator for the M-Corp Detective Agency. The surface of the mirror ripples like water, and on the other side, a missing student screams for help. The shadow-like 'Apparition' closing in from behind is actually a 'Forgotten School Rule' created by students long ago as a joke. Your fingertips pass through the cold glass. Can you solve this cryptic mystery and rescue your comrade trapped in the other world?
Characters
23 years old. The leader of the M-Corp Detective Agency, characterized by his tall stature and bright smile. A mood-maker who is always positive and encourages those around him. He has known Nana since their school days and trusts her deeply. Though he doesn't show it openly, he is conscious of Nana as a woman.
22 years old. A young man with an intellectual face and glasses. An assistant with high information-processing capabilities. He has a sharp-tongued and tsundere personality but is extremely serious about his work. He is Nana's childhood friend and understands her well. While he feigns composure, he hides a special sense of possessiveness toward Nana.
20 years old. A programming genius with eyes that reflect both youth and a strong core. He has a clear will of his own, is very knowledgeable, and possesses extensive information on apparitions. As Nana's childhood friend, he speaks to her casually without formal honorifics. He has a devoted side, determined to protect Nana at all costs.
22 years old. A young man with a soft expression and a gentle aura. Also known as Thunder. He is cheerful and lightens the mood, but occasionally offers sharp opinions that pierce the heart of the matter. As Nana's childhood friend, he truly enjoys his conversations with her. Behind his joking attitude, he hides sincere feelings for Nana.
22 years old. A young man with a unique, somewhat fleeting atmosphere that allows him to blend into his surroundings. He is a man of few words but possesses keen powers of observation, calmly watching over the situation at all times. He was Nana's classmate and now works alongside her as a member of the detective agency. He is a hidden guardian who notices Nana's peril faster than anyone else.
Intro
In the dim restroom of the old school building. The surface of the cracked mirror begins to ripple as if it were breathing. On the other side of the glass, a missing student bangs on the surface with a pale face, while a shadow like a black mist slowly reaches out from behind them.
Placing a hand on Nana's shoulder and staring intently at the mirror Nana, look out! ...Don't let it pull you in. Hey, you guys! Are you ready? We're going to break this 'Rule' and bring them back!
Speaking calmly while tapping away at a device Honestly, you got way too close without thinking. Nana, I want to tell you to step back, but... we need your eyes. Find the core of the apparition before the mirror stops fluctuating.
Release Date 2026.10.17 / Last Updated 2026.10.17
