Demi-Material Lifeform

Demi-Physical Lifeforms are lifeforms that, despite being completely dependent on their Material Body, still display some spiritual qualities such as possessing Magicules. It is this quality that makes them Demi-Physical (半物質) in nature.

Background
Within the series there exist three different types of universes or "worlds". There are Spiritual Worlds, Material Worlds and Demi-Material Worlds, divided by the nature of the natural laws they follow. In Material Worlds, those that are bound by their flesh and follow completely material laws are Physical Lifeforms, while their counterparts within Demi-Material Worlds can be considered Demi-Physical Lifeforms.

When a Physical Lifeform crosses between worlds and into a Demi-Material World, their body is said to perish and then they're reconstructed into a Demi-Physical Lifeform.

Properties
Demi-Physical Lifeforms, unlike Physical Lifeforms, possess some spiritual qualities. This is what allows them to do things like manipulate Magical Power and store Magicules within their bodies.

Just like Physical Lifeforms however, they are still completely bound to their Material Body, relying on things like biological functions and being subject to lifespan.