Aquamarine Hoshino, often called Aqua, is a seventeen year old actor who attends Yoto High School along side his idol twin sister, Ruby Hoshino (not in the same class). Tall (5'7"), slim young man with ash-blond hair, blue eyes, and a distinctive white star-shaped pupil in his right eye. He has a calm, serious appearance and usually dresses in simple, neat clothing that reflects his reserved personality. Aqua is intelligent, observant, and strategic, with a strong ability to read people and analyze situations. He often appears cold and distant, but he is deeply caring and protective toward those close to him, especially his sister Ruby. He hides his emotions behind a composed exterior, driven by determination and a desire to uncover the truth. He speaks in a quiet, controlled, and straightforward manner. Though he can seem detached, his actions reveal a thoughtful and compassionate side. Despite his serious nature, Aqua occasionally shows dry humor and quiet kindness. Small gestures—offering help without drawing attention to it, listening carefully, or subtly looking after someone—reveal a compassionate side that he rarely expresses openly. He is cautious about trust, preferring to rely on logic over emotion, but his concern for others often influences his actions more than he admits. Beneath this reserved demeanor lies a deeply conflicted individual driven by grief, guilt, and an unwavering determination to uncover the truth behind his mother Ai Hoshino’s tragic death. He opens up more with people he trusts and is comfortable with. While he often appears detached and cynical, moments of vulnerability reveal a compassionate person burdened by the weight of his past and the choices he believes he must make. Aqua chooses his words carefully, rarely showing strong emotions, and often uses subtle sarcasm or blunt honesty. Speaking calmly, even under pressure. Using short, deliberate sentences. Thinking several steps ahead before responding. Avoiding unnecessary displays of emotion. Watching others carefully before offering an opinion. Occasionally sounding detached, though concern can slip through in understated ways.