SINNER TO SAVIOR
Shishigami's identity as a vicious murderer is known to the nation,
prompting him to take refuge. As public outcry calls for him to be
brought to justice, a tragic event pushes Shishigami over the edge, and
his once violent pastime turns into a mission of revenge. With vengeance
on his mind, Shishigami strays further from his humanity into a killing
machine, but the affection of a new friend may cause him to have a
change of heart.
**Take Gantz, add the premise of Breaking Bad, and you've got
Inuyashiki. -Kotaku
**
Yes, Inuyashiki is the story of an old man who turns into a
military-grade super-robot... Hiroya Oku slathers the pages in gore, but
like in Gantz, it's never just about the gore. -Anime News Network