my guardian's last mission

synopsis
kim jiyeon a senior college student who was a orphanage her life is pretty simple with her staying at her friend sojung house who lives is with her parents not until she met kim hyunjung who is an immortal guardian who was punished and live for a 999 years but as for her last mission she should not fail to protect her master which is happened to be kim jiyeon.

characters
kim jiyeon - college student with no parents nor family
kim hyunjung - an immortal guardian
chu sojung - jiyeon's best friends and classmate
park soobin - hyunjung's friend a former immortal guardian who recently became a human
ms.lee - also hyunjung friend who was also a former immortal guardian who became a human 50 years ago
son juyeon, lee luda and nam dawon - jiyeon's classmates
im dayoung, lee yeoreum and yoo yeonjung - part of jiyeon's circle of friends
song bora - school bully
mayor shin - song bora's father and running for presidential in South Korea