Studio Deen's new addition to the Anime Mirai 2015 project features a series following Eri's story. She's a girl who finds solace in staying indoors, until she crosses paths with Haru, a curious transfer student. Haru discovers Eri's hidden talent for singing, which she had left behind as a hobby. The anime traces the journey of their love story as it weaves and diverges through a summer in high school.