The School Nurse Files

An Eun Young is a new nurse teacher at school. She has a special ability to see jelly like monsters that are made from residue of human desire and she can also eradicate these jellies. She uses a toy knife and a BB gun to take out the jellies. She senses that a mysterious event takes place at her school. Hong In Pyo is a Chinese language teacher at the same school. Hong In Pyo has a special energy. In order to protect the students, An Eun Young and Hong In Pyo work together to eradicate these jellies.
(Source: AsianWiki)
~~ Adapted from the novel "School Nurse Ahn Eun Young" (보건교사 안은영) by Chung Serang (정세랑).