>>281361542
It's easy, really.
Previously, Kitami was our reliable main protagonist. In psychoanalytic theory, he is what you may call the "Superego", the morally aware, contemplating, and just agent in our psychic appartus (see, Sigmund Freud's structural model of psyche). The superego exists in order to differentiate what is right from wrong. Now, with Kitami, obviously, cracks have shown from time to time (making excuses of how killing is "right"). Nonetheless, until his recent "I am a monster"-schtick these last 2 chapters, he has nonetheless always had morals.
Nomamoto is the complete opposite. If talking about psyche, hers is in right juxtaposition of Kitami's. She is the "Id" at it's very core. She only craves her instincts, and tries to fulfill her animalistic desires. She craves for food, she wants to eat. She does not question if killing others, of whatever species, is morally wrong or not, fore she is hungry. That's all there is to it, that's all it has ever been.
The author created an interesting duo, in which both psyches contradict each other heavily, though they are forced to cooperate somehow. This creates several clashes in their relationship, which are very enjoyable to see unfold. I'm interested where this shit is going.
