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'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 varies. Some character story quests can be completed in a couple of hours, while others might take longer depending on your playstyle and exploration.
I'm not sure specifically what the 'chasm game story' is about as it could be a very unique or niche story. It might be about a game that involves a chasm in some way, like a character having to cross it or something being hidden in the chasm within the game's plot.
Since I don't know the details of the 'chasm game story', I can't say for sure who the main characters are. They could be typical game characters like a brave warrior, a clever mage, or a stealthy thief.