A new home filled with the ghosts of Shiba Inu. What could go wrong? When high schooler Kori Momose goes apartment hunting to be closer to her new school, she comes across a one-bedroom unit at a shockingly cheap price. What's the catch? The ghost of a Shiba Inu dog named Mu is bound to the apartment! But for a girl as icy and awkward as Kori, is sharing a life with the fiery Mu too tall an order? Kori has grown accustomed to life with Mu, her Shiba Inu ghost. She now spends her days helping him make friends, cleaning him when he's drenched from nose to tail in ketchup, and realizing that she's regularly smiling for the first time in a long time. Until one day, when Kori returns home from school to find that somehow, Mu has left the apartment he haunts...