I'm Really Not an Armored Hero

The villains and supporting characters are slaughtered at will, but there is no description of the protagonist killing the villains at all. After watching the movie, I didn't know whether the villains were dead or not. I felt like I was in a state of self-reliance all the time. The description of the battle was too slow, and I had to lay the groundwork for a while before taking action.

I've finished reading it. The writing is good (at least it's smooth) and the plot is not to say poisonous, but it feels a bit messy and full of retro flavor.