Sci-fi

Vampires have been defeated by Humans. A story about them wearing collars. Wait - you're mistaken, it's not like that!
After their death, people's memories fade. The wish to retrieve the fading memories of his deceased girlfriend leads Wu Nian to become the Magician of Memories.
The story follows Kakujou Youkou, who lives in a seemingly normal world where medical technology has skyrocketed to new heights, making it possible to completely replace any human organ.
They were childhood friends, and she had always been more powerful than him. But when they accidentally traveled (summoned?) to another world, it was finally time for him to become the knight in shining armor!
An omnibus collection of interconnected short stories by Douman Seiman.
So Young meets an alien prince. He needs a human woman and has a proposal for her. What will happen to So Young if she accepts his proposal?

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