- a.) You and Me, and Me and You - Nexus
Most Advent Humans Awaken and grow stronger due to the influence of some other powerful spiritual entity, whether it is a Shinigami, Vizard, Quincy or even another Advent Human. This person who the Advent Human is linked to is called a Nexus and their fate is tied inexorably with that person, identified as a Node. Typically, as the Nexus grows stronger, so does their Node. An Advent Human fighting together with their Nexus is much stronger than he would be under normal circumstances.
However, because of this phenomenon, Advent Humans normally choose to become withdrawn from their family, friends, and normal lives after Awakening for fear of dragging their loved ones into their world.
A Nexus can be any Shinigami, Vizard, or human with at least 5000 Connection or Harmony.
When bonded to a Nexus, a newer human starting out will realize rapid surges in the development of their powers. What this means is that once a human attains a Nexus, for the next three weeks they will gain 10% to all stats after applying their grade -- if they and their Nexus write at least 2000 words with each other. After the first week's bonus is attained, the other two must be taken or lost; if you skip the second or third week, that bonus is gone. This bonus only applies to a human with less than 4000 reiatsu, and is only available to a player once, even if they switch to a new character.
After that three-week bonus or after the human has attained 4000 reiatsu, any time the Nexus and Node collab with each other, they will both receive a +100 Nexus Bonus to reiatsu for that week. The Nexus receives this bonus for the first three weeks, also.
The main benefit of having a Nexus is the powerful bond between the Nexus and Node. As long as they remain linked, the wordcount requirements for United Front, United Resistance, and Fate of Triangles are reduced by 1/3rd. Rather than reaching United Front lvl 1 at 35k, a Nexus would reach UF lvl 1 with their Node at around 23k.
When collabing with a Nexus, an Advent Human gains 25% increase in United Front, United Resistance and Fate of Triangle abilities. A boost of 4% with United Front would be increased to 5%, for example.
If the Nexus PC leaves the game, an Advent Human must find a new Nexus. A Nexus may be attached to only one Node at a time.
Pretty much a nexus is a person, of any race, that the AH pretty much leeches spiritual energy off of. Since AHs are really susceptible to other reiatsu sources they use it to grow faster strength-wise.