Psychopaths are known for their crimes on TV, but not all of them are bound to become criminals... They live next to us without us knowing what they are, wearing a mask to hide their true nature... Kim Young Hee is a newly appointed nurse in a high school infirmary. One day, one of her student declares " I am a psychopath..." Original korean run concluded in 2017, english translation is currently being serialized on Lezhin.