The order of the Legend of Korra comics can be a bit confusing. Generally, you should look for the publication dates or follow the recommended reading list provided by the comic creators or authorized sources. Sometimes there are special editions or tie-ins that can complicate the order.
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.
There could be a fanfiction where the kiss is a moment of impulse. Mako and Korra have been through a lot, and the emotions just build up until they can't hold it back anymore. This could then lead to a series of events where they have to deal with the consequences of this sudden display of affection, like how it affects their friendships with others in the group.
It's a graphic novel related to 'The Legend of Korra'. It likely continues the story of Korra in a visual, comic - like format. It might include her adventures, her use of bending powers, and her interactions with other characters in the Avatar universe.