Mototsu

The Mototsu (元つ lit. Original Ones) are an ancient race, created by the Soul King at the beginning of Soul Society. Gunha Teishin calls them "the source of all races", however, this is untrue. They are over one hundred million years old, and they are one of few races that other beings are incapable of becoming. After the Shinigami had almost wiped the entirety of the Mototsu out, with Gai Nagareboshi being the only Mototsu that is officially recognized by Soul Society. However, unbenknownst to most others, there are many more Mototsu out there.

Overview
All Mototsu are similar to Humans and Shinigami, however, the one trait that stands out is their magenta within blue eyes. They are all similar to porcelain dolls; beautiful, slender, flawless, and androgynous. The Mototsu have unique spiritual power: it constantly fluctuates depending on their emotions, while giving off reishi patterns similar to that of the Hōgyoku. An angered ﻿Mototsu would emit an overbearing power unlike anything else in Soul Society, a power completely unrelated to Reiatsu. When Gunha had sufficently angered Gai in Tenth Release- Shinseina Kakusei, he goes on to say that his very presence felt as though Gai was trying to stifle his very existence with his power. However, when not angered, others beings will be unable to sense a Mototsu's reiatsu.

Basic Powers
Mototsu are unable to learn Kid﻿ō, Shunpo, or Zanjutsu techniques, as well as any of the other techniques unique to the other races. However, they have two unique techniques that lead to them being hunted down.

Inen Bakufū (因縁爆風 lit. Origin Blast): The Mototsu equivalant to a Hollow's Cero, an Inen Bakufu is a powerful blast of reishi. With chains of reishi wrapping around the user's firing hand which begin to glow, an orb of reishi forms on their fingertips. Like Hollow Ichigo's Cero, it is tri-focused, and it utilizes a collosal amount of reiatsu. Upon charging up, the user unleashes a potent blast that has incredible power, slightly weaker than a Cero Oscuras.

Kōshinho (亢進歩 lit. Acceleration Step):

Behind the Scenes
The Mototsu were orginally going to have two other techniques, called Inen Bakufū (因縁爆風 lit. Origin Blast) and Kōshinho (亢進歩 lit. Acceleration Step), but they were scrapped in favor of focusing on Anki.