An exploration of the meaning of friendship, especially for the teenagers who are perpetually insecure and self-doubting. The hero's journey is generic, but it shows the necessary truth about what makes friends friends. Self-acceptance and -worth is the important first step. The ending is tropey though.
A damaged person will eventually be destroyed by the world. It’s he versus the world. Phil lived in the past and lived in the memory. But life goes on, so either the world destroys him or he keeps attacking everyone to maintain his balance. Once he shows vulnerability, he can not immune to the harm, cause he is so lonely, lonely to death.