ワンダリング・リペア！

Shusuke is a high school student living with his grandfather, who runs a watch/clock repair shop. He wants to be like his grandfather, but instead, he just lives a lazy life. One day, a little girl comes to the shop. "Repair this watch." 

He tries to repair it by himself and makes it. Just when she puts it on, she transforms into a girl of his age. It seems her time goes wrong. To fix it, they will need to make good memories together. Like this, he and the girl, Amiri, start making good memories...