Hiroto Kanazawa teaches music and coordinates concours at Seiso Academy. He is 31 years old during Primo Passo and 35 during Corda FF. Standing 183 cm tall, he possesses distinctive purple hair and yellow eyes. His birthday falls on March 3, and he has blood type A. His family consists of unnamed parents, a younger sister, and a brother-in-law.

Prior to teaching, Kanazawa achieved renown as a tenor based in Europe. His singing career ended abruptly after his girlfriend's departure triggered excessive drinking and smoking, severely damaging his vocal cords. This forced his return to Japan and shift into teaching. Despite this setback, he retains profound musical knowledge.

As a teacher, Kanazawa displays a markedly lazy and easygoing demeanor, often seeming disinterested in duties. He smokes frequently and resists quitting despite criticism. He spends free time outdoors feeding campus cats. Beneath this seemingly indifferent attitude, he observes students keenly and offers subtle guidance during competitions. Students find him approachable, leading to popularity, though they regard him with familiarity rather than deep respect. Kazuki Hihara uses the affectionate nickname "Kanayan," while Keiichi Shimizu struggles to recall his name. Administrative tasks are largely handled by his assistant, Shinobu Ousaki.

His personal interests include cooking, fishing, and watching baseball, with ramen being his preferred food. He knows of the fairy Lili but claims an inability to see him. The kanji "金" in his surname links him to the planet Venus, aligning with other characters. Across various media, like Kiniro no Corda 2, his consistent role as a mentor underscores his hidden attentiveness beneath a laid-back exterior.