[blackwhite67]

Originally Posted by Log

Surprised no one answered this question.

Spoiler for Bit of a tr;dl:

Gain isn't the correct word here. He already has it.

He's a mechanized soldier like Hiruko.

His left eye, right arm and right leg are prosthesis limbs made out of "super varanium" (basically a stronger type of varanium or something like that).

Most of the time he has castings that hide the fact that half his limbs are prosthesis. They also seal his limbs ability. He needs to release it in order for his limbs to activate.

Basically his left eye has the ability to increase his brain calculation speed to superhuman level. His reflexes was stated to shot up a thousand fold iirc while using it.

His limbs have bullet shells in it. By releasing these bullet shells he can accelerate his limbs and strike at supersonic speeds. It's boasts his "Tendo martial arts" considerably.

He's also shown to be able to accelerate to 150 km/hr when releasing the shells in his leg. He even can "air run" (sorta) by constantly releasing the shells in order to propel himself in air.

Doesn't like using it though because the bullet shells in his limbs have a limit. He needs to refill once it runs out. And doesn't like using the eye because it increases his reflexes by a thousand fold so he perceives things many, many times slower while using that eye. I'm sure you can tell why that's a problem.

Besides that he's fair bit smarter and stronger then he appears to be. For example he was able to figure out stuff about a type of gastrea that someone with 200+ IQ had trouble figuring out (TBF said 200+ IQ person is a kid). For the stronger part, he only appears weak because he always faces monsters while not releasing his casting. He's shown to be perfectly able to take down regular humans and even trained military people.

His willpower is godlike. He was able to survive long enough to inject healing medicine into himself while his entire chest+stomach part was blown up and organs were literally falling out simply because he refused to die.

His luck is also godlike when it matters. But is below lancer tier when it doesn't matter.

And he's a women (loli especially) magnet.

It's also highly hinted that he has some other ability. He was able to injure that gastrea in the prologue of volume 1 and was able to protect Kisara when they were a kid (protect is a relative term of course, he still got fucked up by the gastrea but it can be considered a miracle that him and Kisara made it out alive).

His linage is all but stated to be special. That's basically why Tendo family took him in and why several characters have a interest in him.

I've only read half of 3 and chapter 1 of 4 though. He might have gained something in volume 3 or 4 that I'm unaware of.

Also it should be noted that the manga changed some important things from the LN.

Spoiler for manga and LN differences:

For some reason in the manga Rentaro was irritated at Kisara for bringing up his IP ranking.

He doesn't really give a shit in LN since his rankings aren't accurate anyway.

And he just doesn't really care about IP in general for most of volume 1.

Sorta a out of character moment for him imo. Not to sure what the manga author was going with that.

Also IP in the manga was stated to be a ranking of strength. It isn't. The manga sorta suffers from lack of narration there.

While strength plays a big role in it, it's more along the lines of your achievements in hunting gastrea (or just achievements in general). Obviously you would need strength to do something like that. So it's often used as a judge for strength.

However even normal mode Rentaro was able to take down trained bodyguards while he was surprised so his IP ranking should really be way above 120000. I would chalk his IP being so low as a result of his lack of motivation and lack of luck in finding good jobs (until Hiruko comes along and fucks everything up).

Wow! Thanks a lot man! Here I was thinking our MC was ordinary, but he turns out to be anything but.