Weathering With You by Makoto Shinkai

Longing to escape his island home, a boy named Hodaka runs away during his first summer of high school to find a new life in Tokyo. As rain falls for days on end and Hodaka struggles to adjust, he meets a girl named Hina who holds a mysterious power: With a single prayer, she can part the clouds and bring back the sun. But her power comes at a price, and as the weather spirals further and further out of control, they must choose what future they truly want for themselves.

Written concurrently with production of the 2019 film Weathering With You, this novel comes straight from director Makoto Shinkai, the mind behind 2016's hit your name.!