Author here. Nobody has ever asked about the art before. It depicts Maruyama Oukyo, a famous painter of ghosts (and other things), where one of his pieces comes

Author here. Nobody has ever asked about the art before. It depicts Maruyama Oukyo, a famous painter of ghosts (and other things), where one of his pieces comes to life and frightens him. https://en.wikipedia.org/wiki/Maruyama_%C5%8Ckyo https://en.wikipedia.org/wiki/Maruyama_%C5%8Ckyo