The story of the film is a very deep story dealing with an up-to-date subject, which is also very attractive by adapting the story of the demon and the darling, and has made the animation have a good script. The animation is very well made and full of eye-catching and emotional scenes that always impress the viewer. In addition, the animation creates a very good atmosphere for the viewer with beautiful and lovely music and songs. In general, the animation has both a gentle teenage romantic atmosphere and a fascinating adventure, and with its deep story, it points out important concepts that completely satisfy the viewer.