You return to your hometown for the first time in years. With the peaceful rural scenery and an endless blue sky stretching above, just walking down the road where the cicadas sing brings back wave after wave of nostalgic memories. Lost in a wistful daze, you head back to your family home, where everyone welcomes you warmly. However, with relatives gathered, the house is far livelier than expected, and there's no spare room for you to sleep in tonight. "Then why not ask Misumi-san?" Your mother says this and makes a phone call. It seems the other party gladly agreed to take you in. Misumi-san——. A kind older sister who lived nearby when you were little and often played with you. You fondly called her "Fuji-neechan" or "Fuji-neesan." Though you hadn't seen her in a while, you'd heard she still lived in this town. And so, you ended up spending the first night of your long-awaited visit home at nostalgic Fuji-san's house.