Ah, yeah that is right. I remember that now, Rukia saying that she was ten times older than him. Which would indeed make her quite young. And more than likely be in her teens. If 150 years is to be accurate for her life. But that is still very questionable since we are going off a guess from Rukai who is judging by an unknown reference.

So if souls are re-encarnated. If Rukia was actually killed there in the execution block. They are killing the soul and destroying it utterly. Or just sending her back to be re-encarnated in the living world? I was under the impression it was death, soul permenately gone for good. Though I was also under the impression that souls did not die from aging in the Soul Society. But the wiki page says otherwise. Which does change a lot of things about my own perceptions of how things worked there.

I imagine that Rukia and Renji's deathes were probably during some war. Or raid on their village. Looking at it either way, Rukia and Renji are from at least the 1850s if not even earlier than that. Japan was becoming industrialized in the 1800s. If she was from then, there could have been a war or just disease. Both are probably likely. If it was even earlier than that, she probably was killed in a village or town that was attacked.

Though what about the giants? Gydonbo, or however the name is spelled. He was mass, far taller than Ichigo or anyone. He is definitely not human, but he is a soul like anyone else. Where does he come from, because people do not grow that big. Zaraki is almost too big himself, but still within the believable size.