Love polygon, angsty and masochistic H-tragedy about lies, tender romantic love, painful hopeless yearning, and good intentions. VERY EMO. NO GANGSTERS, WARS, RAPES, DEATH, AND ABUSE HERE - ALL ABOUT BASICALLY NICE PEOPLE MAKING THEIR OWN MISERY. Stunning use of facial expressions and subtle touches and gestures overwhelmingly driving the whole plot.
The focal point of the M-shaped polygon is the young office lady Seiyuu Hina, a sweet, kind, supremely gentle ditz, whose weak-willed go-with-the-flow choices and penchant for compassionate lies royally bugger everything up for the five involved (as of chapter 42), especially her own... in caving to male determination, circumstance, and her weaknesses, she ends up with two boyfriends, a "committed" long-distance relationship with the blissfully ignorant mysterious "Nagoya" (for several volumes, only his city of residence is known), and a "pretend romance of convenience/FWB" (without crossing certain lines) with the dour salaryman protagonist... being always there on a daily basis, desperately in love, playing the "real" boyfriend parts, all the while constrained by rules and the knowledge of forever being a temporary #2 would be wangsty enough, BUT that's just the appetizers. BOTH boyfriends are in fact long-time obsessive love interests of two of Seiyuu's friends, both of whom are another tragic variety of love-struck naivete and bad choices. Add major flip-flopping indecisiveness, depressive angst, and Hina's tendency to try (and spectacularly fail) at telling white lies or acting fake-OK while blinking back tears (she's the sort of cute, gentle idiot to kiss the name of a loved one on a phone call...before rejecting the call, because it'll be "better that way"), for the supposed greater good of all involved, and we have a major, major mess.
lots of very vivid scenes of emotional anguish, interspersed with crowning moments of gentleness, and repetitive naive and unintentional heart-rending betrayals. all loves are hopelessly obssessive, full of delusion, jealousy, and bleak self-hatred.
NOTE: saccharinely tender love scenes with a bitterly sad aftertaste abound and the only thing more commonly seen than Hina's tears or the protagonist's bitter frowns and dejected grimaces are Hina's massive bare jugs... All in all, though, the plot and the wangst make it all rather un-pornographic, regardless. It's all about the expressions. The sad, dejected glances or hopeful puppy-love-struck stares generally directed at them just aren't particularly horny or even salacious... it's more of a dreaming of love and acceptance, go for the boobs and hope for a miracle thing.
It's all so very heartbreaking... and, very often, fits-of-rage-inducing. PROBABLY BECAUSE IT'S PAINFULLY REALISTIC. best depiction of helplessly obsessive yearning and angsty romance I've ever seen in any genre, on any medium.