Amagami-San Chi No Enmusubi

Kamihate Uryuu, orphaned since childhood, receives an invitation to stay at the local Shinto shrine. All he wanted was a quiet place to study so that he can fulfill his dream of making it into a top medical school, but after arriving there, he comes across three beautiful shrine maiden sisters... and the head priest requests that he marry one of them and take over the shrine. A tale of love and miracles is about to unfold! Written by the assistant of Negi Haruba, the author of 5Toubun no Hanayome, who recommends this work. (Full serialization confirmed on author's twitter).