(1) Sylvester II (living Sylvester II 945~1003) was a famous scholar and educator, with the nickname of "magician". Occupation: Pope (reigned 999~1003). Judging from the historical evaluation, he was a man with ideals, ambitions and abilities, but unfortunately he died not too long after ascending the throne. Sylvester II lived a diligent life, but failed to improve the state of the Holy See. After his death, all of them were restored to their original state, and one by one thieves ascended the throne of St. Peter, and finally an incredible figure was Benedict IX (a standard oddity).

(2) Alexander II (originally Anselmo Anselmo Baggio of Baggio, whose name means Guardian in Greek), an Italian pope (reigned September 30, 1061 – April 21, 1073), was originally Bishop of Lucca of Tuscany. He was elected pope on September 30, 1061 and ascended the throne the following day, also translated as Alexandra II. With the assistance of Hildebrand (later Pope Gregory VII), he reorganized the Church, strengthened church discipline, and worked to abolish the clergy trade and the practice of celibacy. , along with his successor, was recognized as the two popes of the Reformers.

(3) Gregory VII (1020 – 25 May 1085), the reformist pope of Cluny, reigned from 22 April 1073 to 25 May 1085, one of the most prominent popes of all ages. In order to free the Catholic Church from the control of the Holy Roman Empire, he fought a lifelong struggle against the Holy Roman Emperor Henry IV. The most famous is the "Humiliation of Canossa" incident.

Zero makes the map of the world arguably consistent with that of Europe, with Rome, alluding to the papal states that ruled the Italian peninsula in the Middle Ages. In addition, he arranged a lot of foreshadowing about the Holy See in "Professor Mowen", so he also added more information about the Holy See in the novel.

In addition, Torristeen corresponds roughly to Belgium in Europe. Torristeen School of Witchcraft and Wizardry is made up of classroom towers that symbolize earth, water, wind, and fire (similar to Hogwarts, isn't it?). ), and the student dormitory tower, with the main tower in the middle containing the dean's room, the treasure house, the auditorium, and the dining hall.

Many noble disciples studied the mysteries of magic here, and it was an important institution for Torlistine to cultivate the country's elite. In addition to Torlistine students, there are also many students from Galmania (Germania) and Gallia (western France).

And Albiang, the earliest known name of the island of Britain. Ancient Greek geographers in the 4th century BC and even earlier used this name to distinguish the island of Britain from the smaller islands of Ireland and the British Isles.

The Greeks and Romans probably received the name from the Gauls or the Celts. The name Albion has always been interpreted as "white earth", and the Romans believed that the name was related to the chalk cliffs of Dover (Latin albus means "white").

And among the zero envoys, the surname of the prince of Albion is more illustrative of this, Tudor, this surname symbolizes the golden age in the history of the English monarch.

As for the book that Osman gave to Gruberu, it has to do with Gruberu's true identity. You can guess that the hint is that (1) this character appears in "Professor Mowen", and (2) Western mythology. In a few days, the answer will be revealed in the plot, and the person who guessed correctly ...... I can't figure out what reward to give for a while.,Can you give me Brother Private? (laughs)