Berserker is Invincible! (1st update)

His skin was ash-black, his muscles explosively defined, and his long black hair framed a wild yet resolute face. He was the kind of ultimate powerhouse who made people feel safe at a glance.

Although this ultimate powerhouse was expressionless, his eyes were striking: his left eye was cold and fierce, while his right was red, seeming to bloom with crimson light—wild and terrifying. They resembled Kakashi Hatake's eyes somewhat, only far more horrifying.

He wore nothing on his upper body, leaving his explosive musculature fully exposed. His lower body was clad in ancient Greek-style skirt armor, with guards around his wrists and ankles, while his feet were bare. Altogether, he looked like a fierce ancient Greek general who had just stepped off an old battlefield with most of his equipment shattered.

In his right hand, he held a stone blade larger than Emiya Shirou himself. It looked as though it were made of stone, yet despite the blade's uneven, pitted surface, there were clear traces of metal in it.

No one could tell what material it was actually made from. Perhaps it was something unavailable to modern humanity, such as the bones of a divine beast.

After all, an ultimate powerhouse like this could not possibly exist in modern society. He could only be a Heroic Spirit.

Simply standing there, his terrifying presence and pressure left Emiya Shirou and the others stiff all over. The two teenagers found it difficult to breathe, while the two Servants watched the ultimate powerhouse with grave expressions. Their instincts as warriors were frantically warning them that the man before them was an unimaginably terrifying foe.

However, though the powerhouse was wild and dangerous, he did not immediately attack. He simply stood motionless, glaring at them with those fierce eyes—one red, one normal.

Then,