The Laws of Eternity (2006)
Original title: 永遠の法
The Laws of Eternity is a 2006 Japanese-language animation movie directed by Isamu Imakake, with a running time of 1h 53m. It stars Hirofumi Tanaka, Sayaka Ohara and Nobuyuki Kobushi.
When a group of students manage to complete Thomas Edison's unfinished "spirit phone" that allows communication with the dead, they are brought to the spirit world by an ancient Incan priest. There they meet historic figures such as Albert Einstein, Buddha, and Friedrich Nietzsche and learn the hidden truths of the cosmos, heaven, hell, and God.