Good art. Nice execution of the cliches and interesting world building.
Art: 8
Plot: 5
Protagonist: 4
Side characters: 7.5
Execution of the story: 9
Overall score: 6.7
The only downside is how little the MC developed as a character after such adventure. My take on a hero that returned from another world would be a very tired man that just wishes for peace. Any kind of naivety or insecurity he had should have been squashed after he witnessed women being raped, comrades dying from his mistakes and the cruel reality of being a murderer. Hero is but a glorified adjective for a butcher.