General spoilers for Fake: Volume 6, Ryo starts willingly 'experimenting' with Dee and we find out some of Dee's backstory- why he became a cop, etc. Volume 7, more of a conclusion for Ryo's backstory and Ryo and Dee getting together. There was more of a fandom a few years ago when the series first came out.

Did you read those two new chapters I posted about a few days ago? :D Fake's being reprinted over in Japan, and Sanami Matoh is writing a few new chapters that are being included in the new editions as an incentive for people to buy the new editions. So far they're chronicling about when Dee joined the precinct.