Ono, the local dentist, was living a normal, quiet life until one day a mysterious boy by the name of Masaki appears before him. Whether it’s at work or in his private time, Masaki follows him around everywhere. What’s more, no one else seems to notice Masaki… just what exactly is going on!? Masaki is only visible to Ono. A ghost? What will happen when Ono realizes he cannot get rid of Masaki, who somehow has the innocence of child yet with the expression of an grieving adult…!?