- Bae Yoonji: Teacher 
- Im Jung Im: English teacher 
- Chun-Woo Han: Substitute English teacher (former) 
- The reason the school was called Nine Dragons is that its founder was hoping and trying to find the successor of the Nine Arts Dragon. Seeing that Shi Woon became the disciple of Chun Woo and reached a high level the reason for the school was fulfilled. However, the founder didn't live to see this as the Nine Arts Dragon killed him.
- ↑ 1.0 1.1 1.2 The Breaker Chapter 2
- ↑ 2.0 2.1 2.2 2.3 2.4 The Breaker Chapter 1
- ↑ The Breaker Chapter 8