[Ode to Gluttony]. A short story. It was a story about how the beasts acted beyond the will of the Paragon. I hope you like this fairy's recommendation. Muah ~😗
A simple idea could be that Haru and Eri participate in a Digimon tournament together. They train their Digimon side by side, and in the process, they start to understand each other's training methods better. Their Digimon also form a closer bond as they spar with other Digimon in the tournament.
A fanfiction might focus on Haru and Eri getting lost in a strange part of the digital realm. They have to find their way back home while also helping some baby Digimon along the way. During this journey, they learn more about each other's dreams and fears. Haru realizes Eri's determination is much stronger than he thought, and Eri sees Haru's kind heart in a new light.
The theme of family or a found family is also common. Deku and Eri can be seen as forming a sort of family unit. Deku takes on a big - brother or father - like role for Eri, and they develop a deep bond that is similar to what one would find in a family.
There's also 'Eri and the Big Adventure'. In this fanfic, Eri goes on an adventure with Deku and the others. They explore a new part of the My Hero Academia world and Eri discovers more about her abilities while facing various challenges along the way.
You can find mha eri fanfic on Archive of Our Own (AO3). It has a large collection of fan - created works, including many focused on Eri. Just search for 'MHA Eri' and you'll get a bunch of results.
Healing is another major theme. Fanfics often explore how Eri heals from her traumas with the help of the kind - hearted characters in My Hero Academia. This can involve her mental and emotional healing as well as learning to live a normal life.
For Naruto, you can explore his post - Hokage days in relation to Eri. Maybe he's more cautious and wise, and he imparts his knowledge to Eri. You can show his growth in handling diplomatic situations if Eri is from another village. For Eri Kitamura, if she's a new character, you can start by giving her a distinct personality. For example, if she's shy, Naruto can help her come out of her shell. Or if she's headstrong, Naruto can teach her the value of patience.
There's also 'Deku and Eri's Adventures'. In this fanfic, they go on various adventures together in the world of heroes. It's full of exciting action scenes and also some really sweet moments between the two characters.