Enkan no Emotions

Arato Arakura is a high school student who lives a low-key life, wary of danger. He has the ability to create a thin wall that only he can see, a barrier. One day, a mysterious woman who calls herself Konomi Kirara appears before Arato. She tells him that she and Arato are "EMO users," people whose strong emotions can be transformed into supernatural powers. From this encounter, Arato becomes embroiled in a battle between EMO users, Arato tries to fight through using his barrier, an ability that has zero offensive power. (Source: Natalie, translated)