Park Jiwon
-Age: 17
-Nationality: Korean
-Race: human
-Occupation: high school student
-Personality: funny and quiet
-Role: protagonist
Kim Mingyu
-not the Kim Mingyu from Seventeen 😂
-Age: 21
-Nationality: Korean
-Race: Guardian (heaven and hell)
-Occupation: waiter
-Personality: responsible and caring
-Role: Jiwon's caretaker and uncle
-Relationship with Jiwon: uncle
Kim Kikyung
-Age: 16
-Nationality: Korean
-Race: Messager (heaven)
-Occupation: high school student
-Personality: social butterfly and silly
-Role: new student at Jiwon's school
-Relationship with Jiwon: soon to be best friends
Kim Sooyoung
-Age: 15
-Nationality: Korean
-Race: Angel (heaven)
-Occupation: high school student
-Personality: sweet and innocent
-Role: new student
-Relationship with Jiwon: neighbour and friend
Kim Jaehyo
-Age: 16
-Nationality: Korean
-Race: Messager (heaven)
-Occupation: high school student
-Personality: smart and sweet
-Role: new student and twins with Kikyung
-Relationship with Jiwon: friend
Lee Chen
-Age: 20
-Nationality: Korean
-Race: Devil (hell)
-Occupation: music teacher
-Personality: Mature, confident and passionate
-Role: Mingyu's best friend and Jiwon's music teacher
-Relationship with Jiwon: his teacher and family friend
Min Gunwo
-Age: 19
-Nationality: Korean
-Race: Reaper (hell)
-Occupation: High school student
-Personality: cold and lazy
-Role: bad boy
-Relationship with Jiwon: doesn't hate him