In 'The Overcoat', Gogol uses a lot of detailed descriptions. For example, he vividly describes how Akaky Akakievich saves money for the overcoat. The overcoat itself is not just a piece of clothing but also a manifestation of the social hierarchy at that time. Poor people like Akaky have to struggle hard to afford something that seems basic to others. And when the overcoat is stolen, it's like his whole world collapses.
I'm not sure which specific story you're referring to. There could be many stories with a character named Nikolai and an 'equalizer' concept. Maybe more context is needed.
Well, a fanfiction about Nikolai and Zoya's kiss might explore their relationship in-depth. It could be set in a specific fictional world. Maybe it shows their growing affection through this kiss, and how it changes their dynamic.
There's not enough information to say for sure. He could be the main character, but it's also possible that he's a secondary character who just has some connection to the equalizer. For example, he might be a helper to the real main character who is involved with the equalizer in a more central way.
One of the main themes is poverty. Akaky Akakievich's poverty is central to the story. He can barely afford the basic necessities, and the overcoat becomes a luxury for him.
Dazai is not based on a true story. Usually, characters like Dazai are formed through the author's imagination and artistic expression to create an engaging narrative for the readers.