One day, if you meet a person who happens to be someone you know well, and who happens to have passed away, how will you react? That's right... I encountered a similar situation three years later. I originally thought I was truly reborn, but the results were completely different, causing me to question several times whether I was really living in the "world that should exist." The real world of the future, an incredible redemption. Who can lead me to escape from that "tower", or continue that "tower" together... Only regret is perfect, or perfection is perfect...