Winter War/YMMV


 * Complete Monster: Aizen, of course, arguably even moreso than in canon. After all, he Would Hurt a Child, is letting the worlds literally fall apart by leaving Gin in charge of Seireitei, and stuck the captive members of the Fourth Division with   Oh, and he employs two minions determined to be the more depraved Mad Scientist... and Gin. Who also Would Hurt a Child, among other unplesant things.
 * Crowning Moment of Awesome: Orihime rescues Ichigo. To be precise, she rejects his hollow's control of him, restoring him to control of his body and saving the lives of most of the people in the vicinity. After being held captive in Hueco Mundo for several months.
 * Isane  (Everyone else was pretty awesome too, but her Failure Knight condition at the beginning of the story makes her effectiveness and quick thinking here even more cool.)
 * Fridge Brilliance: Ogidou's behavior when he finds out that  killed Iemura-   How he reacts just seems to be an example of him going (more) Ax Crazy... Then you remember that in canon (Soul Society-arc omakes- these are very minor characters in canon!), Ogidou is in Iemura's squad of Fourth Division. They worked together day-to-day, and Iemura was Ogidou's immediate superior officer. It makes   seem less like pure Ax Crazy, more revenge.
 * Fridge Horror: Remember  hesitating so long before agreeing to   Perfectly understandable reaction... And then you get to "Crossfire."
 * Foe Yay: Whatever thing Mayuri has for his former boss, it seems to be mutual and is definitely strong enough to suppress voice of reason in both of them. The same goes for Mayuri and Szayel Apollo.
 * Jerkass Woobie: Kazeshini, once you get to his POV.
 * Moral Event Horizon: If Mayuri hadn’t already crossed it,  would definitely count. It was enough for Grimmjow to decide he's too disgusting to fight.
 * Nightmare Fuel: Hollowfied Shinigami, re-opened Hollow Pits, most of the characters' states of mind, the state of the universe in general, and on top of it all it somehow keeps getting worse.
 * The Barragan fragment's corrosive blood. Meaning, if you actually manage to hurt it, you might just
 * Chapter 43 revealing that while
 * Ships That Pass in The Night: Kon/Mashiro. In the fic, it makes sense- he's been using Ichigo's body full-time for months, she's been living at Urahara Shoten so that Urahara can help with her... condition, and he visits frequently. In canon, have they even met?
 * Tear Jerker: And holy freaking HOW!!!
 * Well, here we have one war lost with great casualties and the other war ongoing. And authors put that 'very dark' warning into each chapter summary for the reason. And almost every chapter tries its best to break your heart at least once.