When you become a ghoul, you may not be able to eat human food, but it isn’t automatically the end of your old life. Even for those who aren’t half-ghoul like Ken, your human life lives on, and ghouls are given a choice: to continue living moral lives and do as little harm as possible, or turn into a binge-eating beast.
The former seems quite a bit more difficult than the latter. For the likes of the late Rize and Shuu, humans are no longer anything but fodder. Yoshimura, Touka, Hinami, and the rest of the mainstreaming ghouls at Anteiku and elsewhere, still see humans as having value, and not just value as food, which they very much are at the end of the day.
It’s silly to argue that denying yourself something you not only desperately want, but need for survival, is a more natural state than simply eating whoever when you’re hungry and not worrying about anything else. Murderous ghouls may shrug off their behavior as no different than a lion taking a gazelle, but that’s a false defense, because lions didn’t have the choice they had.
Also, Shuu isn’t just eating for survival, but for fun (and possibly sexual release). Like George Costanza, he’s turned food and sex (though not TV) into one disgusting uncontrollable urge. He’s rich and powerful, but look how alone he is in his dark and airy mansion. It’s only a matter of time before he ends up like Rize. He’s a walking talking cautionary tale on how not to live a ghoul life.
Then there are those who toe the line between the worlds of man and beast, like Nishio Nishiki, who is alive. I thought Ken killed him for sure, but I underestimated a ghoul’s ability to heal. I didn’t really think much of him when he was last defeated—bored, arrogant college playboy; a smaller-time Shuu—but this episode doesn’t just see fit to return to his story, but fully flesh out his past.
Ken rescues Nishiki from a gang of ghouls as they’re about to eat him (we don’t see the fight that ensues, but Yomo’s training is working), then meets Nishiki’s lover, Kimi (whom we saw in the second ep). Shuu, keepping an eye on Ken, then uses Kimi as bait, and Ken and a still-weak Nishiki go to Shuu’s to save her. Shuu wants to eat Ken while’s he’s eating Kimi. Lovely.
Even Ken, Nishiki, and a just-in-time Touka aren’t close to being match for him, as Touka’s friend’s cooking has weakened her considerably (and Shuu suggests she was once colder and thus stronger “long ago.) During the battle’s halftime we get a sprawling flashback of how Nishiki and his sister lived in squalor as young ghouls, but managed to scrape by.
Nishiki’s sister was reported and taken away by Doves, leaving him alone and very much leaning towards becoming a vengeful monster. Then he meets Kimi, a human, at college, and they start a relationship. As it turns out, he saved her, as she had lost her entire family in an accident just before they met.
After Ken blasted a hole in him, Nishiki was again saved by Kimi’s love, when she offers him flesh from her shoulder to heal him. This is why, back in the present, no matter how much Shuu beats him down, he won’t give up until he’s dead. Kimi is everything to Nishiki, and while he may not be a saint, he’s at least capable of seeing humans as more than meat, which means there’s hope for him.
Ken may not have seen the flashback we saw, but he gets the same idea Kimi had when he realizes no one will get out of Shuu’s mansion alive if Touka can’t get stronger. So willingly offers to her the very thing Shuu has been going mad trying to take by force: his half-human flesh. Like Popeye’s spinach, it looks like it will do the trick, though that fight will have to wait until next week.