Daemon

Daemons (悪魔族) are a race of naturally occuring Spiritual Lifeforms similar to Elementals and Angels. They do not have a Body normally, as they exist in a Spiritual World where they mostly wander aimlessly around. By default, most Daemons do not have names or a strong sense of self. There are a few exceptions which include those that have developed an ego after being summoned several times and having contact with the Material World, very old Greater Daemons, Arch-Daemons, and Demons who have been incarnated.

Within the Daemon Realm, Daemons gain strength and prestige almost entirely by age. The older a Daemon the stronger it is. However, it takes a long time to get truly strong within the Daemon Realm, since Daemons are bound by a Magicule limit that forces them to polish their proficiency and efficiency instead.

Within the Material World, as long as a body to possess is available, additional options to get stronger open up for Daemons, but the "common sense" within the Western Nations is that Daemons can only manifest as Greater Daemons at best - with Arch Daemons only being thought to be possible when a Greater Daemon is named - and an Arch Daemon being considered the strongest variation with the sole exception of Demon Lord Guy Crimson. All Daemons, in general, are considered to have strong resistance against Magic.

Summoning
Daemons can be summoned from the Spiritual World to the Material World. Daemons are usually serious and respect contracts, though that might also depend on which color line they belong to.

The strength of the summoner is important as when the summoner is too weak in the view of the Daemon, then the Daemon might turn on their summoner.

Once in the Material World first an ego arises. Each summoner provides more information to the Daemon allowing them to become more proficient and knowledgeable with each summoning.

However, a Daemon needs a body to stay in the Material World, as otherwise, the Material World will reject them.

Social Class and Strength
Daemons gain stronger power as they live longer. Daemons who have reached a certain level reach the upper limit of the amount of possessed magicules, eventually making them numerically equivalent in terms of raw power. Knowledge and experience are the things that matter from there. In other words, the difference in proficiency becomes the difference in combat ability. They hold a racial advantage to angels but are inferior against elementals.

Color Lineage
Depending on what Color Lineage a Daemon belongs to, their personality and willingness to cooperate can change. There are three major dispositions that are based on their Primordials:
 * Negotiable: Can be negotiated with and are probably the best bet when it comes to contracting with a Daemon while keeping the risks at a minimum.
 * Unnegotiable: It is unlikely for any contract to be formed, at worst the summoner might even be tricked into a wicked contract that they end up regretting, which is why it's strongly discouraged to summon any Daemons from this type of Lineage. The only practical use for them would be to trick someone into summoning a Daemon of this kind within an enemy nation.
 * Whimsical: The result of summoning Daemons of these Lineages can vary and the chances of success for establishing a contract are random. These Daemons can be reckless and are subject to mood-swings. Their eccentric nature makes them more likely to possess proficiency in areas that other Lineages do not possess. There is a risk associated with summoning them, but it's still safer than summoning Unnegotiable ones.

Evolutionary Stages
Daemons have their own evolutionary stages, which, unlike their Social Class, is much more prone to external factors within the Material World, like the quality of the contractual compensation, possibly the magicule supply of the summoner, etc.

Naming leads to an immediate strength gain and/or Skill gain and in case of a particularly strong namer, an evolution to the next stage might occur.