Mangetsu no kuchizuke

High school girls who were performing a love charm accidentally summon an evil spirit. Rie, a first-year student at a certain high school, harbors a secret crush on her art teacher, Sawada. However, Sawada is very popular among female students, and the shy Rie cannot confess her feelings directly. One day, Tomoko, Rie's close friend who knows about her one-sided love, suggests they try a charm to make her love come true. With classmates Etsuko and Asami joining in, the ritual is conducted, but Asami’s prank causes it to fail. Since that day, ominous events begin to occur around Rie...