Trapped in a never-ending same day, the time loop city's residents retain their memories, swinging between exultation and despair. Dream architect Eden weaves dreams for the rich every day, but every night he dreams of the sound of waves outside the cycle. When the "concept erasure virus" began to devour abstract concepts such as "trust" and "courage" and spread quietly through time reset, Eden discovered that a door to the past appeared out of thin air on the wall of his bedroom.
The manuscript behind the door reveals that the loop is a cage he activated himself, just to imprison a forgotten entity named "Antiea". The virus is a precursor to the loosening of the seal. Eden must find his sealed "regret" before time is completely solidified, and make a choice between releasing destruction and eternal imprisonment - or, finding a third way, feeding the desire to understand the end of love itself with "infinite possibilities".
