Here's a plot idea. The reader is a journalist assigned to do a story on G Dragon. While researching, they end up spending a lot of time with him and his kids. The kids start to see the reader as a part of their family and G Dragon realizes he has feelings for the reader. Another could be that the reader is a volunteer at an orphanage where G Dragon also volunteers. They work together with the kids there and gradually fall in love. Or there could be a story where G Dragon's kids are fans of the reader's work (if the reader has a certain profession like an artist or a writer) and that's how they all meet and a relationship develops.
To write a G Dragon x Reader with kids fanfiction, start by creating a believable relationship between the reader and G Dragon. Maybe they meet at a concert or through mutual friends. Then, introduce the kids in a natural way. For example, they could be G Dragon's from a previous relationship or they could be adopted. Focus on the interactions between all of them, like the reader helping the kids with homework while G Dragon is in the studio. Show how they form a loving family unit.
A plot could revolve around the dragon being injured and the reader finding it. The reader then nurses the dragon back to health. During this time, they learn about each other's pasts and develop a deep connection. Or perhaps the reader is a thief who tries to steal from the dragon, but the dragon catches them. Instead of punishing the reader right away, the dragon makes the reader work for them, and over time, they fall in love.
One plot idea could be that the male reader is a new student in the area where Poison Ivy's kids are. He stumbles upon their secret hideout while exploring the forest. They initially see him as a threat but as they get to know him, they realize he has a deep love for nature too, and they start to include him in their little group's adventures.
One common theme is the star - fan relationship. Since G - Dragon is a famous idol, many fanfics play with the idea of a regular reader/fan getting closer to him in unexpected ways.
One plot idea could be that they are both part of a secret music project. They start off not getting along because of their different musical styles, but as they work together, they discover a new sound that takes the music world by storm. And in the process, they become really good friends.
Maybe there's a prophecy in both G4 and G5 that foretells of the two generations of ponies coming together. When the ponies from both worlds meet, they initially have some misunderstandings. However, as they face a series of challenges, like a drought or a new dark magic threat, they realize that they need to combine their powers. The G4 ponies have their classic magic, and the G5 ponies have their new - found unity. Working together, they fulfill the prophecy and bring a new era of peace and prosperity to Equestria.
One plot idea could be that Skywarp discovers a hidden ability within Shockwave that not even Shockwave was aware of. This could lead to a situation where Skywarp tries to convince Shockwave to use this newfound ability for the benefit of the Decepticons, but Shockwave is hesitant as it goes against his logical programming.
Well, in some 'g dragon x reader fanfic', the plot could revolve around the reader being a foreign exchange student in South Korea who accidentally bumps into G - Dragon. They start off as friends but gradually develop deeper feelings as they get to know each other's cultures and dreams. This type of fanfic can be really interesting as it combines elements of cultural exchange and romance.
Maybe a plot where they are both cast in a secret project. They have to work together closely, like learning a new dance style for a music video. At first, they are a bit awkward around each other because of their different backgrounds in K - pop. But as they practice more, they start to understand each other's strengths and weaknesses and develop a deep bond.
A story could revolve around G - Dragon and Mino being part of a big music competition. They start as rivals but as they see each other's dedication and talent, they become friends and help each other improve their performances, leading to a very close friendship in the end.