Practicing the Flying Leaf Wheel [Genshin Impact: Collei X Lumine]

A Genshin Impact fanfic, a short story, GL, love triangle. "Traveler, could you... practice the flying leaf wheel with me?" ※ Content warnings: 1. Sex first, love later; more sex than romance. 2. Not a pure romance. Collei has an unrequited crush on Amber, while Lumine gets between them. 3. Collei is the top, Lumine is the bottom. 4. OOC. Character fans and lore enthusiasts, read with caution. (A casual level 60 player from version 1.1, but my personal affiliations are a little complicated, and I don't want to ride the wave of a popular pairing. This is my first Genshin Impact fic. I wrote it simply because Collei is really adorable, though I'm not a Collei fan, I'm an everybody fan.) Theme: Yuri