In 2039, helper androids are widespread as general purpose electronics. Keiichiro lost his family in a traffic accident and retired from his band. One day, he finds an android of an old model in a garbage dump. He takes her home, but after taking her to a repair shop he was told that she couldn't be repaired, so he plans to throw her away. The next day, Keiichiro finds her making breakfast for him. Thus begin the summer days of an android with no memories and a dreamless boy.

Hiroshima, summer of 1945. A young girl named Nobuko saves a starving kitten from crows. She wants to keep the kitten, but her parents dismiss the idea. Nobuko eventually convinces them to let her keep it. She and her brother Makoto name the cat Kuro. Kuro quickly brings joy and laughter to the family. As World War II takes its toll on Japan, it becomes harder for Nobuko and her family to care for Kuro. One August morning, Kuro begins acting strangely...

To Kiiko Kawakami, there was nothing in the world as important to her as Aaya Saitou. Something about her allured Kiiko to the extent that there was no sound sweeter to her ears than Aaya's voice and no sight more beautiful than her hair softly billowing in the wind. It was for that reason she let Aaya in on her secret: last year, she had gained psychic powers from an accident that changed her life. Kuttsukiboshi is a story of infatuation and romance between two girls as their feelings for one another reach the tipping point. Unable to deny their heartfelt desires, the two give into them and make many sweet memories together around the school—testing the bounds of Kiiko's powers and how far they can go without being caught in the midst of their trysts. However, will things remain as they are when Kiiko discovers the love of her life has a dark secret of her own?

Anime adaptation of the manga Kuroi Ame ni Utarete by Nakazawa Keiji.