Haruka Kotoura is a girl who was born with the ability to read minds. Due to being unable to tell the difference between people's words and thoughts at a young age, she would inadvertently expose people's secrets, leading her to be ridiculed by her classmates and even abandoned by her parents. This had led her to become closed off from others in fear of hurting herself and others. This all changes, however, when she transfers into a new high school and meets Yoshihisa Manabe, a dim-witted boy with a perverted imagination. Unfazed by Haruka's ability to read minds, Yoshihisa offers her his friendship and vows to stand by her no matter what. Together, they join their school's ESP Research Society.