Hello.
The samples and summary made me come. The result is good but too short.
The worldbuilding is very limited.
The characters are few and could be described better.
The plot seems interesting.
The artistic side is good though it could be polished better.
What we can see is nice. The MC is normal. The starting point is strange enough to wonder what he really did to deserve being sent to jail and not just any prison apparently. The cellmate is nice enough. The policemen seem strict but not cruel. And everything is happening too quickly.
The art is correct but it still needs some work (skin, light/shadow, hair, texture...). By the way, why all policemen are similar? Are they clones or what?
Good continuation.