I decided to do the review again because I don't think I explained enough and I don't agree with them treating Nanno like a demon and also with justifying Yuri.

I'll talk about Nanno first. Nanno is a karmic entity, in reality she is not that cruel with her punishments. It depends on what that person has done. Nanno gives her punishment but without going overboard. In reality she has never killed anyone. She has her limits and what makes Nanno unique is that she represents karma in the human world, and she is also intelligent enough to know human nature.

Now let's talk about Yuri. Yuri has been evil since she was human. She firmly believed in unlimited revenge and justified her actions. If she had listened to Nanno she would not have fallen so low. But her limitless thirst for revenge made her what she is now. Where Yuri does not leave any reflection regarding the actions of humans, for her the only solution is to kill and kill without mercy.

I think Nanno didn't realized it, at first (it's my theory) that his blood could revive Yuri. She perhaps didn't even know that her blood could create another being but then she realized it, when she saw Yuri again.

Obviously Nanno's plans never come to fruition because Yuri always meddles and ruins things with his killing spree.

Yuri starts a war with Nanno and clearly his goal is to destroy Nanno forever.

Nanno begins to feel human feelings and begins to empathize with humans.

In the last chapter, when Yuri asks her if she gave her final verdict, Nanno does not answer, she remains thoughtful and with a sad look.
In the end I think Nanno was not able to give a verdict because he understood both sides. And before the girl kills her mother, she stops her by hurting herself. Sadly they end up "killing Nanno". She no longer laughs, she only cries silently, perhaps because it was realized that no matter what the human being did the world not learn.

The only one who laughs is Yuri, she thinks she has beaten Nanno and wants to make the world where they kill each other without mercy.

In the end, unfortunately for Yuri, Nanno is seen with his back observing at both Yuri and the other girl, with whom he shared his blood. Because she knew that that girl's goal was to kill, that was normal for her.

Nanno makes a final reflection. Was his existence in the human world really necessary? Would anything change if she continued to exist? Because she realized that Yuri had created a world where humans take justice into their own hands without remorse or punishment.

Clearly Nanno is necessary in this world because there must be a balance.

For me Nanno is the yin (stillness, which makes the world a little fairer) and Yuri is the yan (restlessness, imbalance and evil).

Let's say that both are necessary, for better or worse, because they are the balance of this world.

The reason why I dislike Yuri so much is that despite having been human, she has no humanity, she doesn't reflect on anything she does or leave a message. Her only stupid solution is for people to kill each other and she enjoys seeing that chaos. Despite having been human, she is really stupid, her reasoning is stupid in itself. Maybe it's because she, being human before, was really evil.

I know it takes both sides to create balance. But I hope that in the next season Yuri is eliminated by Nanno, because she already crosses the line.

So my question for you is: Who really is the personification of evil? Nanno who tries to punish, in a not very harsh way, and leaves a message for those who commit crimes and realize the consequences of their actions? Or Yuri, whose only goal is to create evil and make humans kill each other without remorse?