[Genshin Impact] The Sun and Moon Shine Together

A mysterious boy suddenly appears, disrupting a script that had already been written. Why have the boys and girls who should have become history appeared in Teyvat? Behind one conspiracy lies another, even greater conspiracy. Why has a god who belongs to neither the Seven nor the Heavenly Principles appeared? A switched Gnosis. The sudden appearance of the Sun-Chasing Demon and Moon-Charming Spirit. A boy who possesses different elements. The boys and girls who should have remained in history forever. All of this... What could it all have to do with one another? (Just skim the blurb. The silly author is terrible at writing these. Even getting a few words down is an achievement, so don't take it too seriously.) [1. I'm not sure I'll start this story. I might not write it after all. 2. The characters may be out of character, so please don't flame me. 3. Aside from one confirmed side couple, everyone will be romantically interested in the protagonist. There will be romantic tension. 4. I like too many of the male characters, so the various romantic storylines with the protagonist will appear in the extras. That's why I chose the pure-love genre.] Theme: I can't think of one yet