[Crossover] Traversing Worlds

-Blurb- A chuunibyou changes the world... no, wait, a story about saving or destroying the world. Luo Xixiani: "This world belongs to me." *Notes 1. [Old Story Revision Project] Aside from the names, almost everything has been rewritten. 3. As promised when I started this old project, I won't lock it or abandon it. I'm just writing for fun and building up a backlog. Feel free to read as you like. The blurb is tentative. 4. The female lead is a chuunibyou who gave up on treatment many years ago. 5. Thanks to my dear friend Shiyue for the cover.