Seohyeon (the reader)
- ID NUMBER 31
- age 18
- occupation: STUDENT
Seungcheol
- ID NUMBER 17
- age 25
- occupation: N/A
Jeonghan
- N/A
Joshua
- ID NUMBER 131
- age 24
- occupation: INSTRUCTOR
Junhui
- ID NUMBER 1013
- age 18
- occupation: TRAINEE
Soonyoung
- ID NUMBER 223
- age 18
- occupation: TRAINEE
Wonwoo
- ID NUMBER 1001
- age 18
- occupation: STUDENT
Jihoon
- ID NUMBER 4643
- age 18
- occupation: STUDENT
Seokmin
- N/A
Minghao
- ID NUMBER 103
- age 17
- occupation: STUDENT
Mingyu
- ID NUMBER 2
- age 17
- occupation: TRAINEE
Seungkwan
- ID NUMBER 5
- age 16
- Occupation: STUDENT
Hansol
- N/A
Chan
- N/A