Ken Usato is a normal high-schooler in every sense of the word—average grades, dreams, and a tendency to dislike extraordinary people. However, when he encounters the president and the vice president of the student council, both popular and extraordinary, he immediately befriends them. All of this is interrupted when Usato's new friends are summoned into another world—and he accidentally gets summoned as well!

Dejected and with no way to return, he resigns himself to staying quietly in the new world—until he finds out he has an affinity for healing magic, a very rare form of magic which gives him both self-confidence and the attention of all mages. However, not all attention is good, which is something Usato realizes when he is noticed by a crazy fellow healing magic user.