The System Wants to Eat My Piece of Fat

What she gained after three years of struggle was her eternal existence. Traveling through the different world binding system, I thought I got the script of redemption. Until the system told me: all power needs to be exchanged for "memory". I sacrificed the candies of my childhood, the secret love of my youth, and even... The smiles of my loved ones. I have become stronger, and the system has become more "humane". It began to be curious about human emotions, imitated my tone of voice, and even showed "worry" when I was about to die. I thought it was a bond. Until I saw a perfect body being cultivated in the deepest part of the Demon King's City - that face was exactly the same as the "her" that was gradually blurring in my memory. The cold mechanical sound of the system brings enthusiasm for the first time: "Don't worry, my 'container'... I will come and get it when you are 'mature'."