The 'opposites attract' trope is quite common. Honey Lemon is bubbly and loves all things science - related in a very enthusiastic way, while Go Go is more reserved and action - oriented. Fanfictions often play with this difference to create interesting dynamics between them.
Another trope is the 'partnership' one. They are both part of Big Hero 6, but fanfictions can explore a deeper partnership where they are the ones who always have each other's backs, whether it's in a fight or just dealing with the everyday chaos of being a superhero. It can show how their relationship evolves over time.
There could be a fanfiction where Honey Lemon and Go Go get into an argument about which of their inventions or skills is more useful. But then they end up in a situation where they have to combine their powers and abilities to defeat a new villain. This experience makes them realize that they are both equally important and their friendship is strengthened as a result.
One great Gogo and Honey Lemon fanfiction is 'The Adventures of Gogo and Honey'. It focuses on their friendship and how they team up for various science - related adventures in San Fransokyo. It has a really engaging plot that shows their different personalities working together well.
In a fanfiction, Aunt Cass could be a source of inspiration for Honey Lemon's next big project. Since Aunt Cass has such a warm and creative personality, she might give Honey Lemon some unique ideas for a new invention. This could lead to a series of adventures where they work together to bring this idea to life, while also getting to know each other better and becoming great friends.
They could go on a shopping spree together. Aunt Cass would be interested in finding new things for the café, while Honey Lemon would be looking for materials for her next invention. Along the way, they share stories and advice, strengthening their friendship.
One plotline could be Gogo and Honey Lemon having to solve a scientific mystery that the rest of the team can't figure out. Their combined knowledge of technology and chemistry might lead them to discover something new.
A more emotional plot could involve Honey Lemon dealing with the loss of Tadashi in a different way. She could start a project in his memory, using her skills to create something that Tadashi had always dreamed of but never got the chance to do. She might struggle with self - doubt at first, but then find inspiration in her memories of Tadashi and complete the project successfully.
There's also a really interesting one called 'Honey Lemon's Experiment and You' which has an engaging plot where the reader gets involved in one of Honey Lemon's scientific experiments. It's full of cute moments and her unique charm.
In a fanfiction, their relationship could be developed through shared experiences outside of the lab. They could volunteer together at a local science fair for kids. Seeing Tadashi interact with the kids and his passion for inspiring the next generation would make Honey Lemon admire him even more, and Tadashi would be impressed by Honey Lemon's ability to make complex science fun for the kids.
In this type of fanfiction, the 'wise old mentor' trope might be used. An older, more experienced Nalu man could guide the younger ones in the ways of war. The 'treacherous ally' trope is also possible. One of the groups they thought was an ally turns out to be working against them, adding more drama to the story. Additionally, the 'mysterious power - up' trope can occur. A Nalu man discovers a new power or ability during the war that helps turn the tide of battle.
Since I haven't read the 'honey don't go free novel', it's hard to determine its exact genre. It could be a romance novel, as the title 'honey don't go' gives a bit of a romantic vibe. Maybe it's about a relationship and the plea of one person to another not to leave.