The Contract Between a Specter and a Servant, Vol. 4 (light novel) — Michiru Fushino

Off to Kyoto -- the land of Shino's roots!Masamichi was brought back from the brink of death when he made a deal with Shino, a hauntingly beautiful specter. Though the young man committed to a life of servitude and being snacked on, he is surprisingly happy. He eats well, lives comfortably, and even his studies have become more interesting. But his pleasant, predictable days are interrupted when Shino announces a sudden trip to Kobe, plus a brief stop in Kyoto. The enjoyable diversion takes a turn for the worse when darkness from Shino's past appears in the present.