I'm sorry, but as of my last update, there is no widely recognized author by the name Riddle Kamimura. It is possible that this individual is an emerging author, a pseudonym, or a lesser-known figure in the literary community, and therefore does not have a substantial presence or available information about them in mainstream databases or sources. If Riddle Kamimura has begun gaining recognition more recently, I would not have the updated information post-2023. Please provide more context or check the most current sources for updated information.