Rather appropriately, the movie has themes of friendship and staying on the right path. Despite how it may seem, Gureru is actually a well-designed character: portrayed as unable to communicate and perhaps unsure of who he truly is, he accidentally stumbles into danger which creates a "shadow" of himself which wants only destruction. I'm a fan of this type of plot, and it shows realistically how Gureru's shadow continually escalates to more problematic situations, who remains oblivious but clearly cares for the Cures and his classmates, even if his outward actions and thoughts suggest otherwise. He also begins to realize the danger of the situation on his own and suffers guilt and repents to his classmates, who forgive him. It's nice that the story has such a wholehearted moral with a sweet ending for a change. Enen, while not as impressive, also comes out of his shell at the end of the movie, so to speak.
Overall, there are a lot of great messages here from suppressing immoral actions you wish to take within yourself, self-control, confidence, and how friendship can make a difference. The movie may not be of much interest to you if you wish to see a mature plot or something focused on the Cures, but for what it is, it's more than acceptable. 8/10.
