IV, known as Eve, balances third-year high school life with his dual role as manager and DJ for the idol unit Full Throttle4. A behind-the-scenes architect, he spearheaded the group’s formation and steers its direction, prioritizing the members’ growth over his own stage presence—stepping into the spotlight only during electrifying DJ sets.

Sporting medium-length brown hair with wine-red-dyed tips that mirror his crimson eyes, his style blends subtle edge with precision. Three ear piercings (two on the left, one on the right) punctuate his look, while his 178 cm frame and neutral white color palette project understated versatility. Born December 24 under Capricorn with blood type A, his disciplined nature aligns with his astrological profile.

Though approachable and deeply invested in his teammates’ well-being, IV commands respect with a steely demeanor when challenges arise. His leadership thrives on humility, often deferring attention to amplify others. He maintains warm but undefined camaraderie with unit members YUI, RIO, MEGU, and DAI, fostering collaboration without overshadowing their individual roles.

His creative contributions pulse through Full Throttle4’s tracks like "LOVE ANTHEM" and "FAKE STAR," though his personal history and evolution remain uncharted in official narratives, leaving his story focused squarely on the present.