Well, without having read 'yuusha yamemasu web novel', it could potentially be about a hero (yuusha in Japanese) who decides to quit (yamemasu) for some reason. Maybe he's tired of the hero life, and the story could revolve around his journey after making that decision, how it affects those around him, and what new path he takes.
I'm not sure specifically as I haven't read it in detail. But generally, a light novel often involves unique characters, a fictional world, and a story with some sort of adventure or character development. It might be about a hero (yuusha in Japanese) who decides to stop being a hero for some reason.
I'm not certain where you can read it. It might be available on some Japanese web novel platforms. You could try searching for it on popular Japanese web novel websites.
There are several places you can try. First, check with any large international book retailers that have a section for imported Japanese books. They may have imported the 'yuusha yamemasu light novel'. Additionally, there are some niche online communities dedicated to light novels where fans might share information on where to obtain rare or hard - to - find titles like this one. You could also try reaching out to Japanese book distributors directly to inquire about its availability and how to get a copy.
I'm not sure specifically what 'Cap deage' means. It could be a very specific term, a misspelling, or something relatively unknown. It might be a proper name, a local term in a certain area or a very niche concept.
I don't have enough information to say exactly who Cap'n Kathy is. She could be an original character created by the fan fiction writer. Maybe she's a pirate - the 'cap'n' part could suggest that - who has some connection to the wizarding world of Harry Potter.
I'm not sure about its popularity. Since I haven't come across any data or general chatter about it, it's difficult to determine if it's popular or not. It could be a niche light novel that has a dedicated but small following.
The cap man and monkey story is an interesting one. There was this cap man who was traveling around selling his caps. He reached a place near a forest and decided to take a rest under a tree. While he was sleeping, the monkeys in the tree noticed the caps. They climbed down, grabbed the caps, and went back up the tree. When the man woke up, he was confused at first, then saw the monkeys with his caps. He was worried as those caps were his livelihood. But then he remembered that monkeys often mimic human actions. So he took off his own cap and tossed it. The monkeys, being the imitators they are, did the same with the caps they had taken, and the cap man got his caps back.