Kono Aozora ni Yakusoku wo - S01

One morning, Wataru Hoshino discovers a girl asleep in his room-wearing only her underwear. When she wakes up, she punches him in the face and flees by jumping out the window. This girl, Rinna Sawaki, turns out to be a transfer student at Wataru's school and the newest resident of his dormitory. Wataru shares the dorm with four other girls and their teacher, but their time together is limited. Due to the shutdown of Temizugawa Heavy Industry's aviation division-the main employer on South Sakojima Island-families tied to the company must evacuate within a year. This means the girls will soon have to leave. Rinna refuses to get close to Wataru or the others, fearing the heartache of their inevitable parting. But Wataru disagrees, and over the next year, he does his best to change her mind.