Memories Engraved in the Blockchain On a remote island, a virtual humanoid girl and her master, AI engineer Satoshi Shinomiya, live together. The master is making improvements in his short time left, but soon the two begin to have emotional differences because of their love for each other. The master, who continues to make improvements against his life expectancy until his last day, and the girl, who worries about him. The two are in conflict and regret, but in the end, is there a future that both of them hoped for? What was the other wish that they both had, which was passed on to the next generation of unrequited and unrequited feelings? This is a fragile humanoid story that begins and ends in summer.