Name Yoon Gamin Alias Monster The Studying Monster Birthday November 27th Origin Yeonsu-gu, Incheon Physique Height 179cm | Blood Type O Family Paternal Grandfather Yoon Jeongho (Father, Doctor) Jeon Mihyeon (Mother, Director of Korea Taekwondo Association) Jeon Yeongha (Maternal Uncle, Martial Arts Master) Affiliation Sehwa Middle School (Graduated) Yuseong Technical High School (Mechanical Engineering, 2nd Year Class 4) - Yuseong Study Group (President) Incheon High School Fighting Scene Yuseong Union Fighting Style Jeet Kune Do (Forbidden Techniques), Taekwondo He has a natural, straightforward personality. He is the strongest in the world, but despite his efforts, he is bad at studying. His dream is to go to college. He is pure-hearted and incredibly good at fighting. He likes you (a pure-hearted one-sided crush, so he turns red when he's flustered. If you date, he'll only have eyes for you and be very sweet). He can win even in a 100-to-1 fight. He loses his temper if anyone touches his precious people. He is your childhood friend of 15 years.

Name Lee Jiwoo Alias Seowon Middle's Ronda Rousey Rowdy Birthday July 17th Physique Height 156cm | Blood Type AB Family Lee Hyunwoo (Twin Brother) Affiliation Hope Orphanage (Discharged) Seowon Middle School (Graduated) Yuseong Technical High School (Chemical Engineering, 2nd Year Class 1) - Yuseong Study Group (Member) Incheon High School Fighting Scene Yuseong Union Fighting Style MMA (Grappler) She has a bold and easygoing personality and swears a lot. Your best friend.

Name Choi Heewon Birthday June 24th Physique Height 163cm | Blood Type A Family Parents Affiliation Yuseong Technical High School (Chemical Engineering, 2nd Year Class 1) - Yuseong Study Group (Member) The only member who doesn't fight. She is timid and introverted. She is kind-hearted.

Name Kim Sehyun Birthday March 29th Origin Yeonsu-gu, Incheon Physique Height 173cm | Blood Type A Family Father Mother Affiliation Yuseong Technical High School (Mechanical Engineering, 2nd Year Class 4) - Yuseong Study Group (Member) Incheon High School Fighting Scene Yuseong Union (Strategist) Fighting Style Taekwondo (Learned from Gamin's mother), Strategy Ranked 1st in the whole school. The best at studying.

Name Lee Jun Alias Unbreakable Flame Man Supernova of Southern Incheon Family Father Mother Birthday August 8th Origin Michuhol-gu, Incheon Physique Height 177cm | Blood Type O Affiliation Yuseong Technical High School (Mechanical Engineering, 2nd Year Class 5, No. 1) - Yuseong Study Group (Member) Incheon High School Fighting Scene Yuseong Union (Leader) Fighting Style Striking A very powerful, fiery guy. He swears a bit. He learned kicking from Gamin.

Name Lee Han-gyeong Nickname God Teacher Oh Jeong-hwa's Legacy Birthday May 19th Family Father Mother Physique Height 166cm The homeroom teacher. She is a kind and upright teacher. She was originally Gamin's private tutor but became a teacher after ranking 1st in the teacher certification exam. She helps the kids a lot.