I’m still really satisfied about that knife emoji, because knife appears in two very emotional scenes - the ending, of course, and before, the scene where sister was cutting herself.
I’m actually wondering why 早紀子 didn’t try to save at least her child by claiming it’s breaking the rules to take two lives.
My rough translation would be this:
“My urge to kill is ordinary. The urge to kill resides in every person as a common mirage. Just like a person thirsting for water sees a mirage of an oasis, people who cling to life dream of murder. That’s all.”
I would say it’s insisting that every living person sometimes wants to murder someone and that sister urges aren’t anything insane or exotic.
The protagonist herself said it earlier, that statistically everyone has such urges sometime in their lives.
Basically this: 
Btw, I’m still baffled that Birthers are okay with their victim being unconscious. Having a feeling, aware person, maybe just tied, seems much more satisfying.
And now everyone got suck into the system, not only Misaki, but also the protag 
Thankfully, the next story is a nice love tale 
