As of my knowledge cutoff in early 2023, Shu Sakuratani may not be widely recognized as a mainstream author. There can be several reasons for this: the author could be emerging or work mainly in a specific niche, not yet have a broad international audience, or could even use a pseudonym that's less well-known outside of certain circles. It is also possible that Shu Sakuratani is a character or from a work of fiction. Without more specific information, I cannot provide an accurate short description of this person. If Shu Sakuratani has gained prominence more recently or if the name is associated with a specific work or genre, you may want to look for the most current sources for information.