Does this manga have a missing chapter? Because there's no story of the province of Seki. ...

Does this manga have a missing chapter? Because there's no story of the province of Seki. And i saw here http://www.mangago.me/read-manga/koi_wa_maiorita/an/koi-wa-maiorita-chapter-5.html/39/ on the author's note that there IS a story of province Seki. The picture is the one with a guy with eyepatch. I really wanna read it... Does anyone know where i can read it?