The protagonist, "Akito Ichimatsu", possessed an ability different from other people: the ability to "eavesdrop", which means he can hear what others are saying. Soliloquies, secret conversations, backbiting, and information about police investigations; Akito could hear it all.

A month ago, there was a murder case in Akito's town. As a fan of mystery novels, he was curious to find out more about the case. Then he meets a woman belonging to the same university as him, "Miriya Kujou", and learns a shocking truth.

"We are being hunted for our lives."

There is a sort of "thief" who can steal a person's abilities by killing them.
Miriya's power is her ability to "sense" the presence of such abilities.

Will Akito be able to find out the true identity of the "thief"?

[Translated from official website]