On the first basement floor of a certain major company is the Accounting Second Department where Kakuta finds himself in a new position as an assistant to Chief Utsugi Hiroshi. The chief is beautiful and has strange tastes. The chief has all the telltale characteristics of a vampire, but Kakuta simply can’t believe it. As he tends to this eccentric man, will he uncover the truth about his chief and how will their relationship change as a result?