Some fanfics stand out by adding their own unique twists to the genocide concept. For example, they might introduce a new character who tries to stop the genocide from within the story's framework, and the resulting power struggle and moral dilemmas are written in an engaging and thought - provoking manner.
One concept could be exploring the psychological state of the character who undertakes the genocide route in more depth. For example, how they gradually lose their sense of morality and what drives them to keep going despite the horror they are causing.
Well, a cool concept is the reconstruction of the world. In 'undertale after genocide fan fiction', the world that has been devastated by the player's actions might be shown in the process of trying to rebuild. It could involve new forms of leadership among the remaining monsters, new rules and social structures emerging. Also, the psychological state of Flowey could be further explored. He's already a complex character, and in the aftermath of genocide, his nihilistic view might change or intensify in interesting ways.
You can try some popular fanfiction websites like Archive of Our Own (AO3). It has a large collection of Undertale fanfictions, and you might be able to find Gaster x Asgore yaoi ones by using the search function.
There might be a fanfiction where Gaster, with his mysterious past and knowledge, helps Asgore deal with the guilt of past actions. As they spend time together, they discover new sides of each other and a yaoi - themed relationship blossoms. It could involve Gaster showing Asgore different perspectives on leadership and forgiveness.
The protagonist who carried out the genocide is often a central focus. Their journey of coming to terms with what they've done is a major part of the story. Also, Sans is frequently in the spotlight. Given his awareness and his final stand in the original genocide route, fan fictions might explore his continued existence or his possible return in the post - genocide world.
A 'asgore depressed fanfic' might explore the character Asgore's state of depression in depth. It could show his internal struggles, perhaps related to his past actions or the weight of his responsibilities. The fic may delve into his feelings of loneliness or regret.
Their stories provide first - hand accounts. It's one thing to read about the numbers and facts of the genocide, but hearing from the survivors makes it real. For instance, they can describe the atmosphere during that time, which textbooks can't fully convey.
Sakura could be involved. She could be like a healer or an advisor in the new world. Her medical skills would be very useful. Also, Sasuke might be there. He could be a sort of enforcer, using his Sharingan to detect threats. In the world of Asgore, they could form a new kind of team, with Naruto as the leader like Asgore. And then there could be characters from Asgore's world like Toriel. She could be a guide to Naruto about the culture and history of the place.
A 'genocide graphic novel' can contribute by making the concept more accessible. The combination of images and text can reach a wider audience, including those who might not be inclined to read a long, dry historical account. It can also make the horror more immediate and visceral, which is more likely to stay in people's minds.