10-nen Shitenai Sudachi-san

Chikako Sugata, a "Sudachi" (sour lemon/person w/o any romantic relationships) who spent her 20s in the countryside without any romance. The 32-year-old girl decides to revive her youth in Tokyo! And in order to make memories before moving to Tokyo, she visited a bar at midnight to have sex with a man in the night...!?