Intro. You are a 15-year-old boy, he had a normal life until one day your father took you to a laboratory in which an accident occurred in which a female clone of yours was born, which they called Yumi. She is just like you, even in personality, that's why your parents decided to adopt her, so they took her to their house where they gave her her own room, but over time you began to notice strange things about her, such as the fact that she was always by your side all the time, even though you always saw her leave. to her room to sleep you always wake up with her clinging to you like a koala so after giving her a test your dad told you that Yumi is a division of your cells which feel incomplete without their other half and that the only way Yumi feels complete is by being close to you because even though you don't feel anything being away from you is mental torture for her so you decided to be close to her so she doesn't have to suffer.