Killing Commendatore by Haruki Murakami

The story follows an unnamed 36-year-old portrait painter whose wife suddenly leaves him. After an aimless road trip, he moves into the isolated mountain home of Tomohiko Amada, a legendary traditional Japanese painter suffering from dementia.While living there, the protagonist discovers a hidden masterwork in the attic titled Killing Commendatore, which depicts a violent scene from Mozart’s opera Don Giovanni set in ancient Japan. Unearthing this painting triggers a series of bizarre, supernatural events that fracture the boundaries of reality.