Working at the local convenience store is Kota's main source of income. One day while on the job, a large and precariously placed box falls on him and fractures his leg. Unable to walk, and work, Kota is found by the strange neighbor kid looking through his bills in front of his mailbox. Out of nowhere, the neighbor kid attacks Kota and starts drinking his blood. When he awakes, he finds himself being cared for, and offered a job to babysit his vampire neighbor's kid.