In the endless reincarnation of alien trials, human beings are not evolving, but are being systematically destroyed. Every "clearance" is a stripping of the soul, and every "rebirth" is a lingering memory. The so-called "infinite flow" is actually a punishment mechanism imposed by the will of the universe on a fallen civilization - and the protagonist is the only sober person who can perceive the tragic truth but is unable to escape.
Concept: Depressive, gloomy, with a strong sense of fate, the world is full of absurdity and nothingness.