The Legend of Korra comics are definitely worth a read. They capture the essence of the franchise and bring fresh perspectives. The quality of the storytelling and the visuals make them a great addition to the series.
The 'lemon' aspect might be a bit hard to come by in a clean way as it often involves inappropriate content. But for normal Korra and Mako fanfictions, you could also try FanFiction.net. Some stories there might show their relationship developing, their adventures together, and how they support each other, which can be really interesting to read.
Yes. End credits are a standard part of a movie, and 'Scary Stories' follows this convention. They might not be as long or elaborate as some big - budget blockbusters, but they do exist. During the end credits, you can see the names of the people who worked on the movie, which is a great way to show appreciation for all their efforts in creating the 'Scary Stories' experience.
There are end credits in Toy Story 4. They can feature various elements like the names of the cast and crew, special thanks, or maybe some sneak peeks for future projects.
It varies. In some cases, there might be end credits to give acknowledgments or additional information. But not all presentations of scary stories will have them.