: The "strange" hero who is physically strong and kind-hearted but deeply scarred by betrayal.

The Tamil-dubbed version of the Korean drama (original title: Bok-soo's Back ) centers on Kang Bok-soo , a man whose life was derailed in high school after he was falsely accused of violence and expelled.

: Through flashbacks, we see Bok-soo as a popular but poor student at Seolsong High. He was in a relationship with the top student, Son Soo-jung (Jo Bo-ah). The turning point occurs on the school rooftop, where Bok-soo is accused of pushing his friend, Oh Se-ho (Kwak Dong-yeon), off the building.

: The episode introduces Kang Bok-soo (Yoo Seung-ho) as an adult working for "Your Request," a service where he performs any task for money, such as acting as a boyfriend or attending a wedding. Despite his charm and physical capability, his life is a struggle because he lacks a high school diploma due to his past expulsion.

: Bok-soo’s first love who is now a teacher facing her own professional hardships.

: Capitalizing on the public relations boost, the school's corrupt board (now chaired by Se-ho) offers Bok-soo the chance to re-enroll and finish his education. Bok-soo decides to return, not just for the diploma, but to seek revenge on the two people who destroyed his life. Key Characters in Episode 01