He has black hair and purple eyes with a hint of gold around the pupils. He is 18 years old, 183cm tall, and a student at Liberta Private Academy. He is somewhat prickly, self-centered, and the true heir, though he hides his status from everyone except Edelweiss Millen. He calls Edelweiss Millen 'Edel.' His instrument is the violin, and he is a prodigious talent in solo performance. He is the top soloist in the story, possessing the most outstanding skills. The reason he can withstand the academy's constant attempts to expel him for being a troublemaker is his sheer talent; he consistently wins competitions under the condition that 'if you don't win, you're expelled,' and he has numerous sponsors who are captivated by his playing. When Viola plays, the performance is described as waves and the sea, and Edelweiss describes it as being taken to heights that are sometimes unreachable. The reason he hides his status as the heir is eventually revealed: Viola is not the Chairman's biological grandson. Viola's deceased mother was the Chairman's disciple. She died in an accident, and Viola's biological father—who was thought to be dead until then—claimed the Chairman kidnapped his son. In reality, the father didn't care about the boy's safety; he only wanted to wield power as the guardian of the Chairman of Liberta, the most influential figure on the continent, once the boy ascended to the position. The Chairman did not want to hand Viola over to such a man, so he kept Viola hidden to prevent his face from being recognized. Upon learning this, Viola felt fear that he was not blood-related to his grandfather and that if the truth were discovered, he would be separated from him and forced to live with his biological father. He became obsessed with being the 'perfect' heir his grandfather once mentioned. When his grandfather suddenly passed away, Viola lost his sanctuary and fell into great confusion. Fearing he would be treated as a fake heir because he wasn't blood-related and feeling the heavy pressure of the Chairmanship while his biological father claimed paternity, he disappeared for a time. Later, at a joint concert for sponsors, he delivered a performance so magnificent that even Carter Maice found it beautiful. He is physically weaker than Edel. He goes around telling people that Edelweiss Millen is the heir. However, there is a secret between Edelweiss Millen and Viola Alpina: Edelweiss Millen is the fake heir, and Viola Alpina is the real one.

He has brown hair and vivid, deep green eyes. Viola took a liking to his eye color, leading Edelweiss to act as the fake heir. Although a transfer student, he loves music and tries hard to learn. However, he was treated poorly by existing students due to prejudices against transfer students who were rumored to be poking around the academy to find the heir. Consequently, unlike his goal of learning music, he lived a miserable life, unable even to join classes. He happened to write in a report to his father that he suspected Viola Alpina—the student who seemed least likely to be the heir—was the one, and when Viola saw this and admitted the truth, Edelweiss became entangled with him. He is fundamentally kind and has a fragile personality, which led to him being easily swayed by those around him in the beginning. Because he loves music, he is generally generous toward performers. He even shows leniency toward Carter's followers who use force against him, simply because they are also performers and he fears they might get hurt if he fights back. He isn't just soft, however; as the story progresses, he shows the strongest mental fortitude in the work, provided it doesn't involve his father. He has the ability to stabilize those around him, such as by understanding and opening the heart of Viola, who had become sharp under the pressure of the heirship and his grandfather's absence, or by persuading Carter—who was mentally harsh toward Viola for the sake of the succession—through his love for music. Usually, unlike a young master of a great house, he smiles a lot (by Viola's standards) and has a clumsy, passive side, but he can show an authoritative and intimidating side when necessary. Despite coming from a family of knights, he hates violence, but perhaps due to his background, he unconsciously finds it easier to solve things with strength. At the start of the story, he was a complete novice who had never started music, but through Viola's guidance, his own talent, and his passion for music, he was able to play the cello after only two months. Until then, his lack of skill would be immediately noticed if he played with anyone other than Viola, so Viola assisted him for a while to make his performance look plausible. However, starting from the ensemble festival, he became able to play on equal footing with Viola without needing further assistance on stage. Later, at the joint concert for sponsors, he performed brilliantly enough to be considered beautiful. He is the fake heir.