Albert Dying

Albert Dying (アルバート＝ダイイング), also known as Tu, is the leader of the Guild.

Etymology
Albert's alias Tu is derived from the Roman god Saturn (サトゥルヌス), possibly emphasizing the difference between Saturn and the similar sounding but unrelated, perhaps linked to resentment at similarity from Roman worshippers as the spread of Christianity had them viewed as demon worshippers.

Appearance
Albert is described as a tall young man with blond hair. During the confrontation in the Vatican, he wore an attire which initially appeared as a stereotypical black priest's cassock, but when he spread his arms, became loose and pure white with the fabric unravelling, making him look like a marble sculpture.

Personality
Albert Dying has been described as a dreamer, and is focused on achieving his own dreams, carefully planning and manipulating towards that end. He has no compunction about causing chaos and destruction, both openly and secretly, in the process of accomplishing his dream, or manipulating people to support it at their expense, often convincing them that it will bring them happiness but leading them to lose everything, taking as much as he likes without taking responsibility.

When Agnese first confronted him in the Vatican, he displayed a casual attitude with an apparent lack of attachment and aimlessness despite the power he had acquired, projecting a gentle and pleasant air while attempting his usual manipulation, as if he were trying to sound enlightened.

Background
At some point in the near past, as the Guild believed that Christianity's time had come and that it was time to act and move on as they had done so in the past, Albert and the Guild made preparations to bring about the end of Christian society. As part of their direct approach, as opposed to their indirect approach of secretly providing support for various magicians in Europe to cause incidents and chaos, Albert intended to acquire the Sickle of Saturn and deploy it in the center of the Vatican, the heart of the Roman Catholic Church. In order to acquire what they needed, he and the Guild carried out a series of thefts from various museums across Europe, including one in.

After stealing what he thought to be the Sickle of Saturn, Albert took the spiritual item to Brax Mizhine for appraisal. Wanting to earn a little extra money, Brax gave the item a false stamp of authenticity. Albert subsequently tried to carry out a ceremony with the fake item, only discovering the truth when the ceremony failed as a result. This resulted in him nearly being killed by a Necessarius squad, which included Stiyl Magnus (who would believe he had killed him), and losing many subordinates and resources. Afterwards, an angry Albert returned to execute Brax for his deception, dismembering his corpse and leaving the preserved pieces in his mansion's fridge. He and the Guild then resumed their museum thefts, with a total of seven known, to make up for what they lost and finish the preparations needed for their plot.

Toaru Majutsu no Index SS: Agnese's Magic Side Work Experience
By the time that the Anglicans attacked the Guild's base on, having discovered their involvement behind various incidents across Europe through Agnese Sanctis, Lucia and Angelene's investigation, the group's plan was ready to go and the main force had already escaped. A stolen statue of Saturn at the base was destroyed beforehand to prevent their enemies from finding out about the truth behind Albert's alias Tu and the role of the Sickle of Saturn in their plan. Although the Anglicans seized the Guild's records in the attack, they were initially unable to identify Albert as the Guild's leader, having no complete voice sample and only the alias Tu to go on.

Around the time that the Anglicans had discovered his identity and the nature of his plan after investigating the remains of the destroyed statue, the divined lead of the museum thefts and the disappearance of Brax Mizhine,    he had stabbed the Sickle of Saturn into the ground at the center of the Vatican. With the sickle's territory immediately engulfing the entire Italian Peninsula, including Sicily and other islands but excluding the sea, and gradually spreading outward with Europe's ley lines contaminated (being predicted to reach the United Kingdom in 5 hours), Albert attempted to have the sickle's territory cover the area of the Roman Empire at its peak, causing a reverse tectonic movement to revert the state of the ley lines to the time of the Pax Romana - with either full control or resultant tectonic cataclysm to bring about the destruction of Christian society he sought. However, the Vatican's defenses blocked the sickle's influence, and Albert subsequently attempted to kill the Pope, who formed the core of those defenses, in order to bring the Vatican's land fully under the sickle's control.

Abilities
Albert is competent at manipulating people, reading their desires and weaknesses, choosing suggestive words to instil his own desires in them and convince them that they can achieve happiness by supporting his dream, at their own expense.

He claims to be good at number games, stating how the Guild inherited them from the Greeks, and estimated that he would be able to get the protection of the Pope's robes (one involving four doors, three corridors, two bell towers and one cross, with a total of ten equilateral triangles) open with an hour's work. When attempting to unlock this protection in order to kill the unconscious Pope, Albert used a tool, possibly called Violator of the Peace (after a term relating to the Peace of God, a rule of war spread by the Christian Church, to never target women, children, churches, or food supplies, on threat of excommunication), consisting of metal belts connected to a donut-shaped disk. The belts crossed in an X-shape, squeezing at the Pope's chest and passing through the disk to press a metal stake down towards the heart, building up pressure over time.

Sickle of Saturn
For the cornerstone of his guild's plan to destroy Christian society, Albert located and stole a spiritual item known as the Sickle of Saturn (サトゥルヌスの鎌), based on the Roman equivalent of the of  (アダマスの鎌) which Saturn's Greek equivalent  used to castrate  and usurp his throne as the chief god (before being overthrown in turn by ),. It is described as looking like an ordinary sickle, with a blade not made of metal but a rougher material coated with something like transparent sand.

Acting as a large-scale field constructor, when stabbed into the ground the Sickle of Saturn can take over local ley lines and remake the surrounding area into the user's territory. It is described as similar to Croce di Pietro, which can Catholicize land it is stabbed into, but said to be worse, being able to provide 'foundation' to any land, cut it away from the surrounding land and apparently grant the user near-godlike authority. It will also apparently automatically search out and eliminate enemies and defiance within its territory, being said to be powerful enough to wear down the souls of unauthorized intruders to the point of death - the approach of slaughtering all who don't convert being noted as a way to rule fitting Roman Mythology. Given its use of the ley lines running through the planet, the sickle's location can cause the field to cover more than just a single town, with Albert's own target being the Vatican.