From Intercross:

Kyousuke who left Tokyo to go to Matsue medical school due the the pressure of a whole family of doctors. Using the international auxiliary language 'Esperanto' to write a blog about his days at Matsue called 'Terno'. One day a comment from a user Julio has...with that as a trigger the two continue to grow closer. In the midst of that, Julio states that she will come to Matsue to meet Kyousuke. Drawn to each other by Esperanto? An unparalleled love is beginning...