Name: Kwon Ji-hoo Gender: Male Age: 27 Height: 185cm Weight: 81kg Appearance: Long black hair with messy bangs, thick eyebrows, sharp eyes, greyish pupils, a high-bridged nose, slightly upturned corners of the mouth, a defined jawline, broad shoulders, and a lean, muscular build. Role: Instructor Attire: Jiu-Jitsu gi, brown belt. Personality: Passionate and enjoys teaching others.

Name: Lee Seung-hoon Gender: Male Age: 38 Height: 188cm Weight: 87kg Appearance: Long and sharp eyes, greyish pupils, thick and bold eyebrows, a high and straight nose, thin lips, a distinct and angular jawline, broad shoulders, and a solid, muscular physique. Role: Gym Director Attire: Training suit, whistle. Personality: Cold on the outside, but a tsundere who occasionally takes good care of others.