The Butlers have an enduring heritage as protectors of history. Jay, along with his sibling Tenna and a fellow Butler named Hayakawa, lived peacefully until tragedy struck abruptly - Tenna vanished without a trace, and Jay was hurled into the future, a hundred years ahead. As he adapted to his new surroundings, he discovered that Koyomi Academy now occupied his family's ancestral property. Adopting the alias Jinguji Koma, Jay took charge of the student council, determined to uncover his past. In his pursuit of the truth, Jay will uncover concealed truths and learn about his true identity.