Synopsis

"If you can't be the medicine, be poison. Otherwise Otherwise you're nothing but water."

After Araragi Koyomi has graduated, Kanbaru Suruga goes towards her third year in high school. Alone in Naoetsu High School, she hears the rumors of " a demon that grants any wish"...

The story slowly sinks into the depths ー

A story to meet and unveil the mystery.