[Fate/zero]air and Water Droplets

Eight-year-old Emiya Kiritsugu meets an older sister on the island. "How old are you this year?" "Eight years old." They were not familiar with each other, but the night he and Natalia left, she suddenly said to him "I like you, Kiritsugu, let's get married!" "... I'm only eight years old." He always thought of it as a joke. When he later became a bounty hunter, he had already forgotten the incident caused by this man in his youth. Until the eighteen-year-old Kiritsugu received a text message from an unknown number—— [Hi, are you eighteen now? ] Instructions for consumption: 1. CP Emiya Kiritsugu 2. First person warning 3. BE warning A short story, longer than I expected to write. That's it. The above three points are not ridiculous, you can watch_(:з∠)_ Intention: Please remember me.