Psychiatrist Irabu series (2005)
Dr. Ichirō Irabu is a fictional psychiatrist in a series of short stories by Japanese writer Hideo Okuda, originally published primarily in the literary magazine All Yomimono from August 2000 to January 2006 and later collected in three tankōbon: In the Pool, and . Of these, Kūchū Buranko is particularly acclaimed, having won Okuda the 131st Naoki Prize (given for a book published in the first half of 2004) but, as of January 2011, only In the Pool has published in English translation.
More at Wikipedia.