Harahara Shichau Oya ni wa Naisho no Kozukuri Seikatsu Amahara Izumo Hen [ Atelier Kaguya ] jap cen

The main character Amahara Kenya works as a teacher at one of the faculties of a famous university. He has a sister, in the class of which he is currently teaching. Once he finds a love letter in which he is recognized in love, and appoint a meeting place. Arriving to the place, he expects the author of the letter, and at that moment his sister appears, and admits that she was the author of this letter and tells about her feelings Kenya.