The LoK fanfic known as Spring is a very good fanfiction if you're into shipping/romance/smut fanfiction. It's a Linzin (Lin/Tenzin) fanfic that is within the boundaries of canon, but explores the relationship in more depth. There is good smut and bad smut, and this fic has the former. The only bone I have to pick is that the characters' personalities seem a little more exaggerated from their canon counterparts. I give this a 4.5/5 rating.
FanficRecs Spring - a Linzin fanfic - review by Agogobell
The LoK fanfic known as Spring is a very good fanfiction if you're into shipping/romance/smut fanfiction. It's a Linzin (Lin/Tenzin) fanfic that is within the boundaries of canon, but explores the relationship in more depth. There is good smut and bad smut, and this fic has the former. The only bone I have to pick is that the characters' personalities seem a little more exaggerated from their canon counterparts. I give this a 4.5/5 rating.