Genshin Impact: Klee’s Little Sister Is a Little Too Adorable

[Jokes and comedy, with a few Honkai: Star Rail memes and iconic scenes. Every chapter has jokes. There is some fighting, but not much. The story is mostly lighthearted.] After an unexpected turn of events, Klee, who had gone to Starfell Lake to fish-bomb as usual, finds a little girl named Shirley on the beach where the Traveler sets out from at the start. Shirley looks even younger than Klee and is her spitting image, so Klee takes her for her little sister. What Klee doesn't know is that Shirley is a member of the Hexenzirkel. Her combat prowess is almost on the level of a Descender, and she has been sent to protect Mondstadt from an attack by the Abyssal Archon known as Tianyuan. Shirley was also a transmigrator from Teyvat who had played Genshin Impact a few years earlier. She loves making references and reenacting iconic scenes. (The protagonist also played Honkai: Star Rail for a while, so there are a few Honkai: Star Rail jokes and iconic scenes too.) Female lead's character tags: little sister who loves to imitate others, gap moe (when she gets serious, her combat power surpasses that of the Seven Archons), makes ice cream that can be eaten or used as a bomb, adorable queen of memes, Mondstadt's appointed guardian... (There is some degree of OOC characterization, but it can all be attributed to the influence of the protagonist Shirley and the antagonist Tianyuan. Shirley and Tianyuan are original characters created by the author. Please distinguish them from the existing Genshin Impact story and lore.)