Museum of Regrets

"What exactly is this four-dimensional consciousness space?" "A museum." "Museum? What are the collections?" "The ultimate regret of all." "In the white fragments, there is the grievance of a child who died prematurely and threw an eraser; in the green fragments, the groom's obsession is not to regret the marriage, but to give the bride a wedding worthy of her; in the red fragments, the terminally ill man regrets not having someone to support him until his death - can this be called regret?" "Regrets are not divided into big or small, only shades. White complements innocence, green solves choices, yellow repairs relationships, red avoids sins, and as for the rarest black fragments..." "What is it?" "The courage to choose despite knowing that you will regret it." "Then what are you trying to break through these fragments for? To get rewards?" "It used to be, but not anymore." "Why?" "I see my partner, her regrets haven't happened yet." "No surprise?" "Yes. The black fragment that binds the trajectory of my life seems to hide the ultimate secret of the museum..."