Cast:

Tuan Yi Ern (Mark): A class. Member of GOT7

Park JinYoung (Jr.): C class. Member of GOT7

Wang Jackson: E class. Member of GOT7

Im JaeBum (JB): B class. Member of GOT7

Choi YoungJae: D class. Member of GOT7

Kunpimook Bhuwakul (BamBam):H class. Member of GOT7

Kim YuGeom: G class. Member of GOT7

Oh SaeRyung: The new transfer student.

B1A4: Staff at Blood Type Cafe

Plot:

P.S High School is a popular school.

GOT7 is a popular group inn that school.

The new student.

What are they relation?