I traveled through hundreds of worlds at once

"Rentaro, what happened to you!" Aihara Enju rushed forward anxiously and helped the fallen Satomi Rentaro up.

"Ahem~ I'm fine", with the help of Aihara Enju, the pale-faced Satomi Rentaro climbed up from the ground, holding his chest in severe pain, and wiped the blood from the corner of his mouth.

Out of the corner of his eye, he saw several clear claw marks on his super-metal prosthesis. Looking at the claw marks on his arm, Satomi Rentaro looked at Iki standing there with horror.

The hardness of iron is well known, and his mechanical arm has a very high density and hardness far exceeds that of ordinary 'iron' weapons.