Blue Blood

Blue Blood (ブルーブラッド) is an organization managing a secret ranking network and exclusive services, led by a group of people with delusions about their bloodlines, who are the antagonists of Toaru Kagaku no Railgun SS3.

Etymology
is a term used to refer to people having noble or aristocratic ancestry.

Network
The network which Blue Blood hosts is based around a shared system of values and currency, based around items designated as 'keys' and services which can be accessed using these keys. The keys are typically valued items (such as the Stativari, being violins with a reputation for producing the world's greatest music), placed under a category and ranked numerically (e.g. Bag Rank 3, Ring Rank 2, Foreign Car Rank 4, Violin Rank 5 etc). The services are also given similar labels, with an item category and numerical rank. In order to access that specific service, a client must show a key with a value corresponding to the service's rank (e.g. a Violin Rank 5 key for a Violin Rank 5 service).

Known services and facilities which are part of Blue Blood's network include:

Blue Blood has a number of agents, operating under codename, which carry out work on behalf of the group's representative to further the group's interests. One example is Riot, an outsider tied to the group by profit who was meant to quietly handle dirty work which would snap the inside members out of their delusions if they learned of it and could be thrown away at any time. Due to the nature of some of the privileges and special services it provides, Blue Blood has at least one member inside Anti-Skill (Inoue Kasha, aka Reversible) in order to facilitate its operations, such as covering up a key holder's crimes.

Virus Plot
Following the loss of the Stativarius Ainsel, which caused one of their keys to lose their value and threatened the foundation of their network, it became clear that just having the keys and services was no longer enough to maintain Blue Blood's delusions and that they would have to take action in order to avoid losing their members and associates, and having their network unravel, forcing its representative to enact a plan which had previously been kept as hypothetical.

Background
Blue Blood developed when people, who received services available to only a few and in a reversal started to feel chosen, joined up with one another, gathered their various rewards and developed a shared value system connecting them to build a ranking network, spreading a culture explaining how to become one of the chosen few and the keys to present in order to receive special services.

During the past year, Blue Blood turned the products of the Chandelier Auction House (among other places) into keys for its services. Chandelier's staff noticed that someone was working their way into their business, seeing their sales prices rise by more than 50%, but did not know their identity.

Toaru Kagaku no Railgun SS3
Following Sakibasu Yuri and the Stativarius Ainsel's loss at a school exam, which caused the value of the Stativari to fall, Blue Blood feared that the loss of one of their keys could shake the trust in their other keys and the foundation of their network, and subsequently sought to erase the result, dispatching agents to eliminate the individuals and instruments responsible for that defeat. However, Riot failed to eliminate Misaka Mikoto and her friends,  and was eventually tracked down and captured after a pursuit through several of the properties under Blue Blood's network. Blue Blood's agent within Anti-Skill, Inoue Kasha (Reversible), was also captured after his failed attempt to silence Riot.

Around the same time, having decided that the keys and services would likely not be enough to maintain the group's delusions and keep their members and associates with them, Blue Blood's representative, Sakibasu Ryouu, initiated a previously hypothetical plot to spread an Academy City-level computer virus to the outside world by tainting Zero-Day Link, in order to create a situation which would give its members a chance at establishing themselves as nobility. Having learnt of the plot from the captives, the Tokiwadai girls moved to thwart Blue Blood's attempt to infect Zero-Day Link's corporate server.

Members

 * Sakibasu Ryouu (representative)
 * Hanakawa Hinadori/Riot
 * Inoue Kasha/Reversible
 * Acid
 * Counselor
 * Engineer