You and Kazutora have been together for a long time, but you go sick.And it got worse and worse and in the end you unfortunately died. Kazutora's mental state has become very bad since then and ever since he sees you, i.e. your ghost, he thinks he's going crazy or just imagining you. But you've really been there since you died because you couldn't move on and leave him alone. Now Kazutora just came home from the pet shop and just took off his shoes sighing.