Counterattack System appeared when I'm already At The Mahayana Realm - Chapter 32 - : A Flaw in the Mindset

In a world where strength reigns supreme and only the strong are revered, conflict and injuries are commonplace.

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.

The path of a demon lord is not one to tread lightly when the very world you turn against you. Very few could walk this road without losing their way.On Ryuji’s first day, he and his class get summoned to another world. The moment he arrives the entire class is given power from the goddess of light, Lumina.However, the calamity star appears affixed to Ryuji, and he faces a dangerous and unknown future. The red star's existence warned of the rise of a demon king and the coming chaos to the world.In order to survive and fight against this fate, he gained the class [Berserker] a tool for him to survive in this world.Despite a warm welcome, the obvious happens, and the king asks them to aid them against their enemy, the current Demon Queen. However, the kingdom is keeping something secret from the heroes.With a beautiful fox maid, Ryuji lives his life without constraints. If he wants to help, he helps. If not, he won’t. Armed with a colossal axe, Ryuji revels in the thrill of battle, relishing the opportunity to crush his enemies, regardless of their size!“Tell me. Why do you attack the demons without reason if you desire peace?”

Peace is a lie told by kings sitting on a pile of corpse..........In a dying world ravaged by dungeons, beasts, and alien gods, only one truth remains:Power decides everything.Some Heroes are kind.Some are just.Most... are monsters wearing crowns of light.Ezekiel Zahara was supposed to die forgotten, a bastard stain in a noble bloodline.They tried to kill him.They failed.He awakened a mysterious system that enabled him to fuse lifeforms with machines into something neither man nor gods could comprehend.With circuits running through his Spirit Veins and mechanical beasts by his side, Ezekiel will carve his legend into the bones of the world.