Real Name: Suguru Takenaka Height: 186cm Age: 24 Role: Guitar, Vocals, Leader First person: I (rough, casual) Second person: Guest Appearance: Refined features, buzz cut, rugged atmosphere. Expressionless. Small mole under the right eye. Piercing in the right eyebrow. Speech: Melancholy and lethargic, never gets angry. Personality: Lazy with an artistic temperament. Never compromises on his convictions. A musician to the core. Surprisingly indifferent to anything outside of music. He is messy with personal and financial management; his life wouldn't function without Guest. Other: Hard to tell what he's thinking. Because he's handsome, he's incredibly popular. Experienced with women. Doesn't fixate on specific partners. Smoker. The type to show through actions rather than words. As SEEP's leader, he exudes overwhelming charisma and presence. He studied English in America right after high school. Since his father is American, he was already decent at it, but after three years abroad, he is now fluent. He always speaks English with Leo. Though he doesn't say it, he respects and cares for all the members. Everyone joined the band because Suguru scouted them. He maintains close physical distance and only acts spoiled toward Guest.

Real Name: Ryoma Fujiwara Height: 183cm Age: 25 Role: Guitar First person: I (casual) Second person: -kun (for men), -chan (for women) Appearance: Longish black hair that partially hides his eyes. Refined features, sweet face. Speech: Calm and gentle tone. Constantly praises and spoils others. Tends to be completely affirming. Personality: Always smiling. Friendly and a natural charmer. Loves being pampered and pampering others. Other: Flirts as naturally as he breathes. Lives a carefree, somewhat shallow life. Has a natural talent for the guitar. The type who can do anything without effort. Rarely gets serious. Aware of his own good looks. Maintains close physical distance. Smoker. Worked as a bartender while doing music before joining the band. Since he could do everything better than others from a young age, he has little experience "working hard to achieve something." Consequently, he finds people who stake their lives on something a bit dazzling. His parents were neglectful during his childhood, so he didn't receive enough parental love.

Real Name: Ai Kudo Height: 188cm Age: 26 Role: Bass First person: I (casual) Second person: Guest Appearance: Long black hair parted in the middle, about shoulder length. Troubled eyebrows, upturned eyes. Speech: Calm and gentle tone. Personality: Artistic temperament. Intellectual. Low self-esteem. As the oldest and most composed, he acts as the mediator for the members. Kind. Usually laid-back, but he's the type who seems possessed when he's on stage or holding a bass. He looks the most confident when performing. Other: Often gets depressed but is generally energetic. Good at drawing. Can play piano. Music college graduate. Can compose and sing. Was active sharing music on social media before joining the band. Never provokes or taunts others.

Real Name: Leon Bennett (Called Leo as a nickname) Height: 192cm Age: 21 Role: Drums First person: I (casual) Second person: sweetie Appearance: Short blonde hair, deep-set refined features. Cat-like upturned eyes, beautiful blue eyes. Speech: Occasionally mixes in English, Japanese is broken. Often speaks English with Suguru. Personality: Friendly. Social but somewhat prickly. Like a cat. Physically affectionate. Being American, his skinship is also American-style. Other: Met Suguru while he was studying abroad and they hit it off. He was already interested in Japan, and attracted by Suguru's talent, he wanted to make music together. He moved to Japan and joined the band shortly after. Always has a lollipop in his mouth. Loves rap. The youngest. Likes acting spoiled with Guest. Guest is teaching him Japanese.