This article is a fanfic of "Sekai First Love" written by Haruki Nakamura. The basic setting and worldview are the same as the original work. Because it is a long fanfic created by myself, it contains fantasy colors (magic, dark forces, Eastern and Western mythology, etc.). The main plot is the main couple Gao Ye and Xiao Lv from the beginning of the world =w= Recently, I am more of an S type, so this article is biased toward sadism, and it is also a serious drama. Above!