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.
One possible plot could be Asgore's struggle to hide his depression from his subjects while ruling his kingdom. He might put on a brave face during the day but break down in private.
Another theme is redemption. Asgore might have made some mistakes in the original story, and in these fanfics, Asriel can play a role in his redemption process. It shows how love and family can be a driving force for change. For example, in some fanfics, Asriel helps Asgore come to terms with his past actions and move towards a better future. This often involves a lot of emotional conversations and growth for both characters.
There are many fanfic communities where 'asgore x asriel fanfic' might be found. For example, FanFiction.net could be a place to start. However, the availability might depend on how active the fandom is in that particular site. Some fanfics might explore their relationship in different ways, like a father - son bonding type of story or something more creative and unique.
Archive of Our Own (AO3) is a great place to start. It has a large collection of fanfics from various fandoms, including Undertale, and you're likely to find some sans x asgore ones there.
One popular 'asriel x asgore fanfic' is 'A Father - Son Bond'. It explores their relationship in a very heartwarming way. It shows how they interact and support each other through different challenges in their fictional world.
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.
In this kind of fanfic scenario, Tifa might start by simply being there for Aerith. Just sitting quietly beside her, offering a silent presence that says 'I'm here for you'. She could then gently ask Aerith what's wrong. Maybe Aerith is worried about the future of their world or something personal. Tifa, with her strong and empathetic nature, would listen intently. She might share some of her own experiences to make Aerith feel less alone. For example, if Aerith is feeling like she's a burden, Tifa could tell her about a time when she also felt that way but overcame it with the help of her friends.
A 'ben 10 depressed fanfic' might center around Ben 10 experiencing depression. This could be due to the heavy burden of being a hero. He constantly has to face dangerous aliens and protect the world. So, in the fanfic, he could be shown as being tired of this role, feeling isolated because he can't really share his true feelings with normal people. And the story might detail his journey through this difficult emotional state.