I legit laughed my ass off and it is almost 3 AM here, when I saw the girl with the hoola-hoop hair crawl out of Makoto's bed. Like I mean, she barely even knew him for most of this show and suddenly she just walks into his bed. There's no two ways about this now, Makoto is using black magic. And not sexomancy, which is a pure and wonderful art I learned about while reading The Name of the Wind. No, no, no. Makoto's using nothing short of witchcraft to get this much pussy. NO ONE in High School, let alone a loser of Makoto's proportions, should be getting this kind of tail this fast. He legitimately has sex with three women at once because so many women had fucked him already. As the credits for this episode rolled, I said "No way will those three have time to have sex with him too." Well boy was I wrong there!
Anyway, it was absolutely wondrous seeing Sekai stew in this episode, and also a little unnerving that discovering that she is pregnant with the child of a guy who hasn't seen her in weeks/days and has already moved on to fucking other women is the magical charm that snaps her out of her funk. If just realizing she was pregnant had done it, that would've been fine, but the fact that it isn't that, but the realization that the child is Makoto's that reassures her is sad. Not as sad as other things in this episode, but we're not there, not yet.
Oh no, before that, we see the collapse of the Ass Empire of Makoto I, and let me tell you, never has the Fall of Babylon been so beautiful. One by one every last woman in his life rejects him. Each and every one of them calls him out on his bullshit and blocks his calls, shutting him out and leaving him ostracized and labeled shameless and slutty. Does this sound familiar? It should. But Makoto, he's a sociopath champ! He takes it all in stride! It isn't his fault he came inside a woman! Nope! It isn't his fault that all the women he knows hate him now, and moreover, he does not know what he did to deserve such scorn. No, sir, Makoto can't think of a single thing! And when he finally does get down in the dumps, it isn't over the sheer volume of bullshit he's done in the last semester! He doesn't acknowledge that, and instead pines for a simpler time, in which he was still fucking multiple women without getting caught by any of them.
Broken, depressed, and a social outcast on Christmas Eve, Makoto is spared from further agony by the appearance of an angel. Before him appears a Katsura whose skin is white as a corpse's the driven snow. She tells him she believes in him, and she loves him, and at long, long last True Love Conquers All. Right?
NO.
Now we come to the part of this that is beyond tragic. Makoto's left this girl less than a shell. To say that she's empty is to underplay the harrowed state in which she is found. Throughout the episode she is seen haunting the places they used to go together, talking to the blocked voice message on her cellphone as if it were him, and caressing what I am most definitely certain is the Knife of Monte Cristo. By the end of the episode, even the voice in her phone is gone, its batteries have died. We're not told how much time has elapsed between these two episodes, but I'm assuming this is at least a full week, and in that time, no one has noticed the dead look in her eyes, the soulless, gaunt appearance of her face, or the fact that she is carrying on a loving conversation with someone who is not there.
At one point in the episode, Makoto, ecstatic for a chance to see Otome again, declares he has too much free time. As he says this, we are shown a pregnant and unconscious Sekai, the undead body of Katsura, stroking the Blade of Catharsis in her lap on the bench she and Makoto used to sit at, and upon which Sekai and Makoto first made out. These things continue to happen throughout the episode, driving home that Katsura is very much so a member of the walking dead as she stumbles about aimlessly, living a life that never happened.
But the thing that really makes this whole affair the most depressing moment I've ever seen in any anime ever, is that when the insane and erratic Katsura reunites with the monstrous, lascivious and predatory Makoto after goodness knows how long, the bastard tells her he loves her. And, in the most heart-breaking instant I've ever seen, this blatantly false and entirely selfish confession of love heals the girl, restoring light and motion to a body which has for several episodes been utterly devoid of any spark of life whatsoever. That the fleeting affection of this guy, who has been nothing but unfaithful, manipulative, and cruel to this poor girl almost from the moment he met her, is the thing which brings her out of the mires of agony, out of that dark place beyond the point where she had blamed herself for all things (as victims of abusive relationships often do), out of that Hell to which he himself had thrust her, is depressing in a way that seeing Wakaba with Saionji and seeing Casshern conclude that Death is Life never, ever was.
I'm not saying School Days is better than Revolutionary Girl Utena or Casshern Sins, mind you, only that this one moment is more depressing than any of the numerous fucked up and depressing moments in either of those shows.