Sasameki Koto Season 1 Episode 13 Calling You

Sumika ends up going out of town to her Dad's hometown for the festival and visiting the grave. Before Sumika leaves, she tells Ushio that she'll call her once she's there. Once Sumika gets to her destination they end up having to stay at a temple because of a small fire that broke out at the home. Once at the temple Sumika could not call Ushio since her phone did not get reception. The next day all Sumika could think about was talking to Ushio, though she did not have a chance because she was taking care of her relatives. At the same time, Ushio was waiting for Sumika to call her. The two of them could only think about hearing each other's voice.