Okay well there are a few Fan Roleplays floating around here for sure. I know there is a Katekyo Hitman Reborn! one in the Miscellaneous section. Other than that, I'm not sure what you're looking for. Just take a look around and see if something catches your eye. :)
Welcome Asuna! I hope you're having a good time at Iwaku. Feel free to check out the RP request threads or make your own so others would find what anime RPs you want to make :)