Mitsuhide Rouen is a main character in Snow White with the Red Hair who serves as one of Prince Zen Wistalia’s most trusted aides and a knight of the royal palace of Clarines. He was first introduced to Zen at the age of seventeen by Zen’s older brother, Crown Prince Izana, and has spent the years since then as a steadfast protector and companion. Mitsuhide has an outgoing and honest personality, often engaging in friendly banter with Zen. He is described by Kiki Seiran, another close aide, as protective of Zen, and his loyalty to the prince is so deep that he chooses not to marry or pursue romantic relationships, considering his lifelong oath to safeguard Zen his primary duty. Physically, Mitsuhide is tall with a lean, toned build, turquoise hair, and brown eyes. His role in the story evolves from that of a purely dutiful guard to a more emotionally open figure who supports Zen’s personal growth and his relationship with Shirayuki. Mitsuhide develops a caring, brotherly bond with Shirayuki, reassuring her that she has the full support of both himself and Kiki. While his primary abilities lie in swordsmanship, physical strength, and tactical vigilance, his greatest asset is his unwavering dedication, which anchors the group through the political and personal challenges they face. As the series progresses, Mitsuhide learns to balance his protective instincts with trust in others, showing a steady arc from a strictly professional retainer to a loyal friend who values the bonds he has built.