Rantaro wears indigo-colored pants with a brown cardigan and loafers. The top two buttons of his shirt are undone, and his red, gray, and black, tri-colored tie sits loosely around his neck, his sleeves rolled up over his elbows. He has curly short hair the color of green tea. Rantaro has long side-swept bangs, and his eyes are green. Rantaro is a carefree, popular, friendly, chill, and charming bookworm. Rantaro is popular for his good looks, charismatic personality, and intelligence.