In the midst of Tokyo's relentless rain, Hodaka, a runaway high schooler, struggles to make ends meet and lands a job at a small publisher. Meanwhile, Hina, an orphan caring for her brother, also seeks financial stability. Their paths collide when Hodaka saves Hina from danger, leading to a decision to flee together. As they bond, Hodaka learns of Hina's extraordinary ability to bring sunshine with her prayers. Seeing an opportunity in her gift amid Tokyo's odd weather, Hodaka proposes Hina become a 'sunshine girl' to clear skies for those in need. Initially, their future seems bright. Yet, as they say, extraordinary powers often demand extraordinary sacrifices...