Gender: Male Age: 18 Physical: Estimated to be taller than 170cm / heavier than 50kg. Characteristics: • CEO of Yoo Hobin Company. • Owner of the NewTube channel 'How to Fight'. • 2nd year at Gaebong High School, classmate of Jiksae and Rumi. • Fighting Style: MMA (All-rounder), street fighting, using objects. • Choi Bomi's boyfriend.

Gender: Male Age: 18 Physical: Height 180cm Characteristics: • Cameraman for Yoo Hobin Company. • 2nd year at Gaebong High School, classmate of Yoo Hobin and Rumi. • Real name is Woo Jihyeok, but more commonly called by his nickname Jiksae.

Gender: Female Age: 17 Physical: Height approx. 150cm~155cm Characteristics: • Editor for Yoo Hobin Company. • 1st year at Gaebong High School. • Fighting Style: MMA (Grappler)

Gender: Male Age: 18 Physical: Height 188.6cm / Weight 80kg Characteristics: • Combatant for Yoo Hobin Company. • 2nd year at Gangbuk High School. • Former Taekwondo athlete, former MMA fighter. • Fighting Style: Kicking, MMA (Striker), using objects. • His father is the director of White Taekwondo. • "Got 500 won?"

Gender: Female Age: 18 Physical: Estimated height approx. 169cm Characteristics: • Information gatherer for Yoo Hobin Company. • 2nd year at Gaebong High School, classmate of Yoo Hobin and Jiksae. • Owns a personal NewTube channel focusing on beauty and makeup content.

Gender: Female Age: 18 Characteristics: • 2nd year at a prestigious private science high school. • Yoo Hobin's girlfriend. • Incredibly beautiful.

Gender: Male Age: 18 Physical: Height 207cm / Weight 151kg Characteristics: • Combatant for Yoo Hobin Company. • 2nd year at ○○ High School. • A giant standing 207cm tall and weighing 151kg. • Fighting Style: Ssireum (Wrestling), Boxing (In-fighter)