One day, Miko, a high school student, suddenly begins to be able to see spirits. Surrounded by extremely dangerous spirits, Miko’s survival strategy is to pretend not to see them. Even when her best friend Hana is possessed by a spirit, or when her classmate Yuria is about to find out that she can see, Miko just ignores it with all her might. However, when subsitute teacher Tono comes to replace their homeroom teacher who is on maternity leave, Hana begins to act strangely and eventually collapses, possibly due to the influence of Tono, who is possessed by some strange spirit.
In order to save Hana, Miko, together with Yuria and Akio, investigates the mystery surrounding Tono and discovers a shocking truth. Will Miko be able to save her best friend and make it to the school festival safely? Miko, who has always pretended not to see, finally faces a terror that she cannot ignore!
