Greatly enhanced his own combat power!
In this respect, Asimov had given Rein certain inspiration.
The opponent's innate skill 'Frenzy' came from an experiment involving bloodline transplantation. Although it was said to be highly risky, he could learn about it in advance, which didn't necessarily mean he had to go through with it.
Furthermore, he could actually achieve a certain wizardry over-speed release by adding points through the system, such as the current 'Metal Barrier,' which is operated in this manner.
Of course, the greatest inspiration Asimov had given to Rein was that if the talent and profession were very compatible, the combat power displayed would be extremely astonishing!
And his talents, 'Advanced Steel Body' and 'Junior Weapon Mastery,' seemed to be extremely compatible with close combat...
....
Next, the second most impressive thing was Iron Man's metal prosthetics.
