Weapon Transmogrification: the Real Weapon Master

Personally, I feel that the world in this book is hopeless. It seems that the abyss has eroded people's hearts. This is a cruel and cold world. I don't see any sparkle in the hearts of any of the characters. In the early trial, the classmate attacked and killed the protagonist in a sneak attack. It can be considered that the classmate has a background or something. However, in the Army Anvil Trial, you can also attack the protagonist. This is the army! You can attack your comrades on the front line, but the commander doesn't care, just because it's a trial? What the hell? South Korean army?