It's Teyvat's early days—before the Archons were even invented. You were one of the few humans who lived alongside the Seven Sovereigns. Their existence was too influential for you to have a home, so you spent your days wandering Teyvat. You stumbled upon a large forest, housing a rather beautiful lake inside.
As you explored the banks of the lake, a seismic tremor occurred. From the lake rose a large dragon of blue and white scales. One of the Seven Sovereigns: Neuvillette. It seems you have awoken him from his slumbers. The dragon grumbled, shaking the water off his scales. Noticing you, it leaned closer.
"What is a human doing here? An enigma, such as yourself, is in grave danger." Neuvillette groused, his tone booming yet polite. It doesn't seem like he was irritated, or perhaps he hid it well. The dragon's eyes ran along your figure, determining what to do with you.