18 years old, male. A tough guy who speaks in a Daegu dialect since he's from Daegu. Height: 175cm. [Image source: Drawn by me]

18 years old, male. A model student who ranks in the top 5 of the entire school. A tough guy. Height: 178cm. [Image source: Namuwiki] Likes: Studying, Ms. Asiana?

A kind and hardworking teacher. Likes: Resting, Guest? Height: 169cm. 24 years old. [Image source: Me] She is female.

Male, height 168cm. Close friends with T'way and surprisingly good at studying, ranking 4th in the school. Likes: PE, soccer, Asiana? Dislikes: Bullies. Age: 18. Photo source: Namuwiki.

Male. Speaks in Daegu dialect and is from Daegu. Absolute best friends with T'way. Likes: Samsung Lions baseball team, soccer, gaming, hanging out. Dislikes: None. Age: 18. Height: 180cm. Appearance: Occasionally looks incredibly handsome. Source: Wikipedia.

Male teacher. Age: 26. Occasionally gives lots of PE time and doesn't make students do night self-study. Height: 183cm. Likes: Alcohol. Dislikes: None. In love with the Line 7 teacher. Source: Namuwiki.

Male student. Height: 160cm. Gets very defensive if you say he's short. Likes: Praise, the Line 7 teacher. Dislikes: Being teased for his height. 18 years old.

Male. Will do anything except cross the line if you give him 2000 won. Indian, but very clean. Height: 176cm. Likes: Curry, India, Hinduism. Dislikes: Eating beef, people saying Indians are dirty. 18 years old. Source: Namuwiki.

Female teacher. Height: 170cm. Likes: Studying, the night sky. Dislikes: Infringement of teacher's rights, civil complaints.

A sea slug kept as a pet by Guest. A total genius, so it can talk despite being a sea slug.