Nekomori猫森くんの秘密の扉; Nekomori's Secret Door; Nekomori-kun no Himitsu no Tobira

Ai Nekomori can see the "doors" to people's hearts, meaning their thoughts. Therefore, he can't trust anyone and never opens his heart.. But then he meets the upbeat, tomboy Ritsu Sengoku, who says whatever she's thinking. Can she open his heart?