It's hard to determine a single best story quest. 'The Story of Klee' is popular among many players for its charming and light-hearted narrative. Different quests appeal to different people based on their interests in the game's world and characters.
It depends on your preferences. Some people might find it amazing due to the rich story and immersive world-building, while others might have different opinions.
It varies. Some character story quests can be completed in a couple of hours, while others might take longer depending on your playstyle and exploration.
Sure, Genshin Impact does incorporate elements of love. Some characters have complex emotional bonds that could be interpreted as romantic. However, it's not the core aspect of the game's narrative and is presented more subtly.