Morimura Yuuki, a high school music teacher, serves as the concert master and lead violinist in Fujimi Orchestra, an amateur musical group. The orchestra experiences a significant shift when a talented young conductor, Tonoin Kei, renowned for his musical prowess, joins them. Despite Tonoin's strict approach, the members appreciate the remarkable progress in their performances, causing Yuuki to question his own contributions. As Yuuki grapples with unrequited feelings for his crush of three years, he believes she may have feelings for Tonoin, prompting him to contemplate leaving the orchestra. However, Tonoin, whose affection for Yuuki is deep and sincere, confesses his love, unveiling his true feelings and revealing his homosexuality. This unexpected love revelation plunges Yuuki into a state of confusion, leading to a series of unfortunate misunderstandings.