Haruka Kotoura is a girl who was born with ESP, the ability to read minds. As she has no real understanding of this ability and tends to blurt out everyone's thoughts, she becomes ridiculed by her classmates and even disowned by her parents, eventually leading her to live alone as a recluse. Years later, Haruka transfers into a new high school. Not getting along with the other students, she is approached by a dim-witted boy named Yoshihisa Manabe, who remains eager to hang out with her despite her being able to read his dirty thoughts...