Genshin Impact: The Twin Spirit Speakers and the Demon God

[A non-blood-related sibling romance that turns into something more + Raiden sisters + possibly other heroines + Archon War + one of Liyue's rulers] Li Yan transmigrated and became the twin of the spirit-uttering Archon, the most pitiful Archon in history, whose people had betrayed her: Havria. With no attachments in his previous life, he decides to make this life vibrant and carefree. First on the agenda is fixing his little sister's timid personality. But how did the task of saving the world and resolving everyone's conflicts suddenly land on me?! [A note from the author: Hello, dear readers! This is a new author with a new book, so please bear with me. I'm neither an expert who has deeply studied Genshin Impact nor a peerless scholar. I just have a few ideas and wild imaginings, and it would be a shame not to write them down, so I'll write as I go. There may be many implausible parts, so please be patient with me. I'm a student, so updates may be irregular. I'll update whenever I can. Just make do with it, everyone. Suggestions are welcome; if you want to argue, you can be right. Hope you enjoy it.] [I'm just starting out as a writer and haven't mastered pacing or restraint, so the earlier chapters may not be very good. The story also spans a long time, so the plot may jump around. I'll do my best to tie things together. If you're interested, you can skip ahead or read whichever chapters you like for fun.] [My writing is terrible, so please don't flame me if you don't like it]