One common theme is family. Since they are siblings, many fanfics explore their relationship, like how they support or annoy each other. Another theme is magic. Their magical abilities are often central to the plot, such as using magic to solve problems or get into trouble.
There's also 'Alex and Justin: A New Bond'. This fanfic focuses on a time - travel scenario where Alex and Justin end up in a different era of the wizarding world. They have to rely on their sibling bond and magic skills to find their way back. It has a great blend of adventure and family dynamics.
Conflict is also a theme that can be found. There could be external factors that oppose their relationship after the kiss, such as family disapproval or differences in their magical abilities. This creates drama and tension in the fanfic, making the story more engaging as they try to overcome these obstacles together.
Perhaps in a story where the world is in danger, and Alex and Theresa have to team up to save it. Along the way, they face many challenges and rely on each other more and more. Their bond grows stronger, and the kiss could be a celebration of their new - found closeness and trust. It could also be a moment of realization for them, like 'Oh, this is more than just friendship' kind of thing.
You can try searching on fanfiction websites like FanFiction.net or Archive of Our Own. Just type in 'Alex Russo and Theresa Kiss' in their search bars, and you might find some relevant fanfics.
One of the essential elements is the exploration of their personalities. Alex is known for her impulsiveness and Justin for his studiousness. A great fanfic will play on these traits. Another aspect is the family dynamic. Since they are part of the Russo family, how their parents and other family members interact with them can add depth. And of course, the magic system needs to be consistent. If it's too chaotic or doesn't follow any rules, it can make the fanfic less enjoyable.
Often, themes of magic and the Russo family's wizardry might be incorporated. For example, their magical powers could play a role in the story, either in bringing them closer or creating some sort of conflict within the 'lemon' - themed plot. Another theme could be growing up and dealing with the changes that come with it, as they both are in different stages of adolescence in the show and fanfics could expand on that in a more romantic or mature way.
I've also heard of 'Alex and Justin: The Magical Quest'. It takes the two on a quest that not only tests their magical abilities but also their bond as siblings. The story is filled with action and some heart - warming moments as they support each other through tough times.
Well, 'Alex and Justin's Magical Missions' is a fanfic that I really like. It has a series of missions that Alex and Justin go on, and it shows their individual growth as well as their growth as siblings. It also adds some new characters that blend well with the existing Russo family dynamic. And then there's 'The Secret of Alex and Justin' which uncovers some secrets about their past and how it affects their present and future in the magical world.
I'm not sure which specific 'Justin and Alex Russo lemon fanfic' is good. You can try searching on some popular fanfic websites like FanFiction.net or Archive of Our Own. Just search for 'Justin and Alex Russo' and browse through the results to find ones that might interest you.