It means that novels should be genuine and authentic. There's no room for false or counterfeit elements in a good novel. This could refer to things like false plots, fake characters' emotions, or unoriginal ideas.
I'd say it's likely not a real story. Usually, when something is labeled as 'Fakes', it implies that it's fabricated or not based on true occurrences. However, it could still draw inspiration from real-life situations and themes to create an engaging narrative.
It depends. Sometimes what's presented as 'Fakes' might have elements based on real events, but it could also be largely fictionalized for entertainment purposes.
I think Comixology is a great option. It offers high-quality scans and has a user-friendly interface. Also, it often has exclusive content and updates regularly.
I think specialized manga apps such as Tachiyomi and Manga Rock are great. They often have updated content and customizable reading settings. However, make sure to use legal and authorized sources to support the creators.