Hatsune Arisaka is a character from the anime series Tona-Gura! She is the energetic and lively younger sister of Kazuki Arisaka. Known for her enthusiastic and playful personality, Hatsune often brings humor and lightheartedness to the series. Despite her cheerful demeanor, she is deeply caring and supportive of her sister and friends. Throughout the series, Hatsune provides emotional support and comic relief, making her an essential part of the Arisaka family dynamic and contributing to the overall charm of the show.