Sorry to Be Beaten Down by the Devil

I, Rai, am a swordsman. A hundred years ago, he fell into a glorious sleep to seal the Demon King, and woke up a hundred years later—— Forgot who you are. When I woke up, I was holding an earring in my hand, and an unknown girl said my name was Ley. A crazy doctor left a note saying, "It's okay if you don't want to come, it's up to you." There were also girls all over the capital who screamed when they saw me and treated me like a tourist attraction. It is said that I used to be very strong, sealing the devil and guarding the dawn. He is the kind of "bright swordsman" sung in epic poems. The only thing that bothers me is - I obviously don't remember anything, but I always feel heartbroken. In the dream, there was a man with dark blue hair. He smiled and gave me an apple and said: "Don't forget me." ... Then who did I forget? There is no such person in history books, there is no such person in legends, It seems that I am the only one in the whole world who remembers it (no, I forgot it too). In short, This is the story of an amnesiac swordsman who is being watched while searching for his memory. Occasionally it hurts, occasionally I laugh, and occasionally someone pushes an apple into my hand. ——Wait, is there something wrong with this story?