I'm not sure specifically as I haven't read it. But generally, a light novel often involves elements like unique characters, a fictional world, and some kind of adventure or relationship development. It might be about a pact with spirits in a world related to Yomi, which could involve battles, magic, and self - discovery.
It depends. Sometimes movies or shows labeled as 'Hustle' might draw inspiration from real events but could also have fictional elements added for entertainment purposes.
It might show the characters constantly working hard. They could be seen striving towards their goals, taking every opportunity that comes their way, and not being afraid of putting in long hours or extra effort. That's the essence of hustle.