What is an antagonist?
An antagonist is the character in the story that is against the protagonist.
Every antagonist has a backstory that shows how he deviated from a normal life.
~~This story has one too.

As a story progresses, there are two paths an antagonist can take - either he takes the redemption path or he stays the same.
Usually if one takes the redemption path, they undergo a long, grueling, and humbling process of trying to make up for their past crimes.
And if one does not take the redemption path, well.. he remains unfazed by the outcome of his actions and would re-do them if given the chance.
Both paths are acceptable according to me. I can't bring myself to hate the story if he chooses the 2nd path.

I actually liked this manga in the beginning, however, that all changed when I reached the 'conclusion'. It completely ruined my overall experience of the manga.
If an antagonist takes the redemption path, he should SUFFER the consequences of his actions, no matter how grave or light his actions were.
You CAN'T skip the "suffer the consequences" part and give the antagonist a happier ending than the protagonist just like that.
That's just plain wrong!
Heck, after completing this, I wished that I was the bad guy in this story.
If you can commit a crime and get away scott-free, can you really ask for something more?

Also, this is my first review. Hence, the poorness in its quality. Now, I don't write reviews at all. But as this manga left me with a very bad aftertaste, I just couldn't leave it alone and had to express my thoughts. I tried my best to not spoil the story.

~Thank you for taking your time to read my review.