It's a light novel that often involves themes of the undead. The story typically follows a female character who has a connection to the world of the dead. It combines elements of horror, action, and sometimes a bit of mystery.
It's quite close. The anime of Shikabane Hime mostly adheres to the manga, with just a few small differences that don't significantly impact the main plot or character development.
The'michi' in the light novel might be a character's name, a place, or a concept. Without more context, it's hard to say exactly, but it's an important part of the 'kokoro connect michi random' story.
It's fairly common. Fans often look for more content related to their favorite shows. Since 'Attack on Titan' has a large and passionate fan base, there are a lot of fanfics available. 'Aot' fans might watch (read) these fanfics to explore different scenarios that the official story didn't cover. For example, they might want to see how a certain character would react in a different situation or what would happen if a major plot event had a different outcome.
In the 'shikabane hime light novel', there is usually a female protagonist who is a shikabane hime. Alongside her, there might be other characters like the ones who help or oppose her. For example, there could be a mentor - like figure who guides her in understanding her powers and the world of the shikabane, and also antagonists who are trying to use the shikabane for their own evil purposes.
There could be various fanfictions. Maybe some that focus on alternative endings, like ones where certain characters survive who didn't in the original. For example, a fanfiction where Erwin survives and leads the Scouts in a different way.
Kemono Michi light novel is about a professional wrestler who is summoned to a different world. He then uses his wrestling skills and knowledge in this new world filled with various kemono (beast - like creatures).
It could mean that a person who is a fan of 'Attack on Titan' (AOT) is reading or watching fan - created fictional works related to AOT. Maybe they are interested in seeing different interpretations or storylines that fans have come up with.
One way is to check on popular fanfiction websites. Look for ones with high ratings and a lot of reviews. For example, Archive of Our Own (AO3) has a large collection of AOT fanfictions. You can search for the most popular ones there.