One great dangan ronpa fukawa x togami fanfic is 'A Strange Bond'. It delves deep into their complex relationship, exploring how their contrasting personalities interact. The author does a wonderful job of portraying Fukawa's shyness and Togami's arrogance, and how they gradually come to understand and rely on each other.
There's a fanfic called 'Unlikely Alliance'. In this story, Fukawa and Togami are forced to work together in a difficult situation within the Dangan Ronpa universe. As they face challenges side by side, their relationship blossoms in an unexpected way. The writer really captures the essence of the characters, making it an engaging read for fans of the pairing.
I'm not sure about a specific one off the top of my head, but you can check out fanfic platforms like Archive of Our Own. There are likely many well - written fukawa x togami fanfics there. You can search by tags related to the characters and the Dangan Ronpa series. This way, you'll be able to find fanfics that focus on their relationship development, or perhaps some unique takes on their interactions.