Hoshizora no Memoria - Wish upon a Shooting Star

After their mother passes away, Kogasaka You and his younger sister, Chinami, pack up and move out of the city back to their hometown of Hibarigasaki to live with their aunt Shino. Before making the move to the city, You spent almost every single day after school playing with a girl up at the town observation lookout; she was You's first true friend. And when she learns of You’s upcoming relocation to the city she becomes very upset…so much so that she makes him promise to her that one-day he must return to Hibarigasaki to marry her. And with a final departure she kisses You on the forehead.