Fantasy film/drama from Japan. A truly unique and authentic central idea, the projection of the "homunculus", an ancient theory of the birth/origin of every human being. Only here, the term essentially means the inner fears and wounds that everyone hides. With a micro-intervention in the skull, a new experimenter on the limits of science and madness tries to unlock the brain's ability to develop more senses and be able to see the projected homunculuses. One of his humans-volunteers/experimentations will be a homeless man who has lost his memory. An interesting scenario with revelations about the past and the lost memory of the homeless man and plot twists in the end, accompanied by quite good effects. However, the whole way of presenting this particular idea was quite childish and with some not-so-moral elements (e.g. Prostitution of underage schoolgirls, which for them may be considered something not a big deal, almost normal). Huge idea with very nice central script, but totally childish execution... Too bad because it could be a huge movie just like the idea. In Asia, Korean cinema is much better overall, if it came out in Korea, it would have been a much more serious film I think. Still worth a watch for the concept.