Piano prodigy Ichiro Yaso has abandoned his instrument. After a crushing defeat in a competition two years ago, the young musician swore never to play again and now drifts through his high school days as an underachiever. His life takes an impossible turn when he encounters a disheveled old foreigner speaking only German in a convenience store. The man makes an extraordinary claim he is the reincarnation of Ludwig van Beethoven, who vividly remembers dying on his deathbed in 1827 Vienna moments before waking up in modern-day Japan. To the boy's astonishment, the stranger proves his identity through his profound musical knowledge and by drawing out a miraculous performance from Ichiro's rusty fingers. Beethoven, his hearing mysteriously restored in this new life, decides to take the broken teenager as his disciple.

The story unfolds in contemporary Japan, where Ichiro attends the prestigious Reiro Academy, a school for budding musicians. This modern setting constantly challenges Beethoven, who refers to the country as the Orient and must navigate smartphones, convenience stores, and seven-octave grand pianos that did not exist in his era. The advantage of a shared language barrier becomes a plot point, as Ichiro can speak German, making him one of the few people who can communicate with the disoriented composer.

The central conflict revolves around Ichiro's trauma. He remains haunted by the competition incident that shattered his confidence and drove him away from classical music. Beethoven himself battles existential questions about his second chance, having lamented on his original deathbed that he was dying alone with no one who truly understood him. Together, they form an unusual master-disciple relationship where Beethoven pushes Ichiro back onto the stage while confronting his own fears about legacy and meaning.

Key narrative arcs include Ichiro's gradual return to the piano, beginning with a tense encounter at a public piano where a fellow student named Oka Kahoin forces him to perform. Kahoin, known for her cold and intense personality, plays a significant role as someone aware of Ichiro's past. Another significant thread involves Beethoven adapting to the 21st century, experiencing wonder and confusion at how his music has survived for two centuries. A subplot introduces a shadowy organization seeking to find the reincarnated composer, though this storyline never fully develops as the series progresses. The manga ran in Weekly Shonen Jump from February to June 2025, spanning twenty-two chapters collected in three volumes. Throughout its brief publication, the series explores themes of artistic trauma, the pressure of genius, and whether redemption can come from an unexpected second chance with a legendary mentor.