Well, another place to look could be FanFiction.net. However, the quality and content can vary greatly. Some stories might be really well - written and capture the essence of the relationship between kaede and kokichi, while others might not be as good. It's all about exploring and finding the ones that suit your taste.
You can try searching on fanfiction websites like Archive of Our Own (AO3). There are often many fan - created stories about different pairings, including kaede x kokichi.
Some dedicated fandom forums might also have kaede x kokichi fanfics shared by fans. You could join relevant Danganronpa forums and ask around. There might be some hidden gems that haven't been widely spread on the bigger fanfic platforms. Just make sure to follow the rules of the forum when looking for and sharing fanfics.