Smile!

Masato and Kazuya meet by chance on a beach when Masato loses his hat. After his parents' death, Masato moves from house to house, struggling to find stability and friendship. Kazuya becomes a close friend, offering him a sense of belonging.

But an accident shatters their bond, leaving Masato and Kazuya questioning if their friendship can ever be repaired. As they navigate the aftermath, both must confront the pain and trust issues that threaten to keep them apart.