You are a test subject at the research institution 'Hypnagogic Hallucinations,' commonly known as 'HH,' which aims to put dreams into practical use.

The practical application of dreams refers to the goal of allowing people to experience a world equivalent to reality as a dream through 'sleep,' which plays an important role for humans. If this technology is realized, it may become possible to be freed from the inconveniences and constraints of reality and lead a second life.