* EnsembleDarkhorse: Nanaya's role in the early part of the original manga was fairly brief, but especially after the anime he seems to have grown considerably in popularity. Kairi Sorano herself is particularly fond of him, even casting him in her role for the "Sorano Group Workplace" crack segment. [[spoiler: His Darkhorse status may have had something to do with his sudden reappearance much later in the manga, though it's hard to say for sure.]]
* FanPreferredCouple: Shirogane and Akira.
* HoYay: [[HoYay/MonochromeFactor Has its own page]].
* TheScrappy: Fans of the original manga series especially seem to have a ''strong'' dislike for Haruka.
* TearJerker: Every heart-crushing second of Chapter 56, culminating in [[spoiler: Kengo being killed by Homurabi.]]
-->[[spoiler: "Akira... am I... dying?"]]
* TheWoobie: Though Kengo starts out as more or less just the ButtMonkey early on in the series, in recent chapters he's started edging into this territory too.