Inuyashiki is a Sci-Fi seinen manga by Oku Hiroya published in Evening magazine.
The manga tells a story of Ichirou Inuyashiki,a 52 years old grandpa who has a hard life - he has a badly paid job, his family ignores him and he's been diagnosed with cancer. One night Inuyashiki is killed in a alien crash and becomes a machine. He realizes he in not human anymore and wants to help other people as much as possible.
This may sound like a bad superhero story but the further you are into it the darker it gets. The art is amazing. The best part about this manga are the characters. They are normal and feel real. Not only the characters but the whole story feels like it could happen in real world.
This is my first "review" and it probably sounds bad, but if you are wondering if you should read this manga, definitely go for it. Overall, i rate it 9/10.