Citizens of No. 6 start dying from the parasitic wasps within them. Shion and Rat have found Safu, but she’s become a medium for Elyurias, and while part of her remains to tell Shion she loves him, she isn’t quite Safu anymore. Rat sets a bomb on the main computer core and escapes with Shion, but Safu stays put. When the bomb blows, the prison begins to crumble, and is hastily evacuated. Both Nezumi and Rat are seriously wounded by gunfire from guards. Elyurias transforms into a giant wasp and spreads her power throughout No. 6, removing the infestation of wasps, tearing down the walls, and healing the guys. With eveything Shion hoped for accomplished, he and Nezumi go their separate ways, with Shion returning to a changed No. 6.
Eleven-episode runs can be killer for series with Really Big Ideas like No. 6. As the series progressed, it seemed unsure of how large a story to tell, and unsure how exactly to tell it. Episodes were spent with Nezumi and Rat just sitting around philosophizing. There’s a lot of exposition and lengthly explanation here, too. This was not a perfect ending, and I don’t think it was a great one, either. But it was pretty good.
I was disappointed that the guys came all that way to rescue Safu (though Rats primary goal was destroying the prison) only for her to say a few word and then basically die; she almost feels like a McGuffin. She’s obviously the kind of girl who knows who she loves no matter how little of him she actually sees, and Shion is a mess after Rat carries him off without her, having lost someone he had so much more to say to. But his pipe dream came true – in a deus ex machina, neat-little-package way kinda way. It had a definite ending, which is more than can be said of some 11-episode series.