The idea of hades actually came from the German philosopher Friedrich Wilhelm Nietzsche (1844 ~ 1900). Many classic quotations are Nietzsche's famous sayings.

For example:

When I reach the heights, I find myself always lonely. Nobody talks to me. Lonely winter days make me tremble. What do I want in the highlands?

Since I am tired of pursuing, I learned to find it at once; Since a headwind hit, I have been able to resist the wind from all directions and set sail.

Our hearts are like trees. The more a tree longs for the sunshine in the high places, the more its roots will go deep into the soil and darkness.

The higher we fly, the smaller we are to those who can't fly.

If you stare at the abyss for a long time, the abyss will stare at you.

These are Nietzsche's exact words.

Even "when you have experienced seven times of loneliness, you can become a real strong person, and our world is born from this!" "This super classic game is also derived from Nietzsche's sentence: I have never experienced the seventh loneliness.

Also, the idea of eternal reincarnation in the film is Nietzsche's. In addition, the movie "Super Warrior's power will not exceed his belief", "When you experience seven times of loneliness, you can become a real strong person, and our world will be born from this", "We only exist for love (let's just say, don't worry about anti-Snow Emperor)" and "We only exist for being stronger" are typical voluntarism thoughts represented by Nietzsche.