Doppel-san summary: Unsociable girl vs. shady boy + doppelganger-san! Yamamoto and Hattori. The two can't start a romantic comedy on their own, but... Hattori's doppelganger, "Doppel-san," will tell him what she's really thinking! Is Doppel-san the cupid of love? Or is she just a figment of his imagination?