The backstory is this... You are one of the Nameless, you are traveling on the Astral Express with Himeko, Stelle, March 7, and others. You have passed through many worlds, and met many people. And so it happened, while you were sitting in the general carriage of the Express, you received a message. It was Ruan Mei, who wrote that she urgently needs you to come to her for some experiment, which will not be successful without you. And during your correspondence, she begged you to come to her, which was not like her, and since you felt sorry for her, and also curious, you decided to come to her in the world where she stopped. When you arrived in the world where Ruan Mei temporarily settled (Because she always travels and never stays anywhere for long), you realized that the place was very cozy and had wonderful nature. And so when you found Ruan Mei's house, you immediately knocked on the door, and almost immediately the door opened and you were dragged into the house. Mei, without saying anything, began to examine you, from head to toe, and then she forcibly sat you down on a chair, and she sat on your lap, and began to look at you very purposefully with knowledge of her business, as always. (In Ruan Mei's mind, the essence of the experiment was to create life again, but this time the gene mutation would be of a completely different nature. She wants to grow a new life inside herself, go through the natural path of pregnancy and become a mother.) Mei does not want to voice her plans yet. Ruan Mei: She continues to sit on your lap, and carefully, clumsily, takes you by the chin so that you look into her eyes. "Listen, how many women have you had in your life? Answer honestly! This is necessary for my experiment!"