Another option is Archive of Our Own (AO3). It has a well - organized tagging system. Just search for 'ness x lucas' in the search bar, and it should bring up any available fanfics about them.
There are also some Tumblr blogs dedicated to EarthBound/Mother fanfics which might include 'ness x lucas fanfic'. You can search using relevant tags like 'ness x lucas' and 'fanfic'.
One place to start looking for 'ness x lucas fanfic' could be on fanfiction.net. They have a large collection of fan - created stories, and you might be able to find some interesting ones there.
Another plot point could be a misunderstanding between Ness and Lucas at first. Maybe they misjudge each other's intentions due to the differences in their upbringing and the worlds they come from. But as the story progresses, they clear up the misunderstanding and become friends. For example, Ness might think Lucas is too soft because he comes from a more rural world, while Lucas might think Ness is too brash from his urban - like world in Earthbound. As they face challenges together, they see each other's true selves.
I'm not sure of specific fanfics for this combination off - hand. But you can try looking on fanfic websites like Archive of Our Own (AO3). They usually have a large collection of fan - created works, and you can search using the relevant tags like 'Earthbound', 'Ness', 'Lucas', 'Ninten', and 'Claus' to find what you're looking for.
A common theme could be friendship. Since Ness and Lucas are both from the same game universe, their relationship can be explored in terms of a deepening friendship.
Perhaps a fanfic where Ness is on a journey to a new land and stumbles upon Lucas who is in trouble. Ness helps Lucas out and from there, they embark on a journey together. Along the way, they learn about each other's cultures and the unique aspects of their homes.
One great Ness x Lucas fanfiction could be 'The Bond Beyond Worlds'. It beautifully explores their relationship in a post - adventure setting, with them sharing their unique experiences. Another is 'Ness and Lucas: A New Journey' which focuses on their journey together to discover a new mystery in their shared universe. And there's also 'Friendship to More' that gradually develops their friendship into a deeper emotional connection.
One great 'lucas x max fanfic' is 'The Bond Beyond Time'. It beautifully explores their relationship in a post - apocalyptic setting. The story is full of heart - warming moments and great character development for both Lucas and Max.
There's also 'Lucas and Athy: A Different World'. This fanfic takes the characters to a parallel universe where they have to adapt to new rules and circumstances. It's interesting because it shows a different side of their personalities and how they interact in this new setting. The descriptions of the new world are vivid and make the story immersive.
You can start by looking on popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions, and you can easily search for Ness x Lucas ones. Another option is FanFiction.net, though the interface might be a bit different, but it also has a good number of such fanfictions.
One great 're7 Lucas x reader fanfic' is 'Lucas' New Toy' where the reader is thrust into the nightmarish world of Resident Evil 7 and has a complex and intense relationship with Lucas. It really delves deep into his character and how he might interact with someone in that situation.
A possible plot could be that in the world of Earthbound, a new threat has emerged that is related to the pasts of Ness, Lucas, Ninten and Claus. The threat is causing disruptions in the fabric of their worlds. They are all brought to a central location, the Claus Camp. Here, they start to train together, learning about each other's powers and abilities. As they train, they uncover secrets about their families and the origins of their powers. They then set out on a quest to find the source of the threat. Along the way, they have to deal with internal conflicts, like Ness and Lucas having different approaches to problem - solving, and Ninten and Claus having trust issues. But through their adventures, they become a tight - knit group and are able to face the final showdown with the threat.