Zerono Pendragon Akatsuki is a young boy who lost his mother in Fuyuki's accident and survived it with another boy named Shiro, these two young boys quickly became friends before the latter was adopted by the person who rescued them.
The young Zerono was adopted by one of the world's most feared beings one of the apostles of death, a powerful vampire, great troll Zeltrech, the boy seeing something mysterious in the old man decides to become his grandson.
And so the young boy begins his incredible adventure in the world of the Magi and the latter turns out to be a monster in understanding and practicing magic like projection, runes, and many others but also shows skills in the handling of the sword and becomes his grandfather's disciple in the magic association the "Clock Tower" in London
The young Zerono lived a lot of adventure around the world as one of the Executors of the association, and also as a treasure seeker, but also thanks to the magic of his grandfather the Kaleidoscope which allows access to parallel universes where he made many friends, but also becomes aware of the greatness of the universe and begins to study the magic of his grandfather
Thanks to Zeltrech, Zerono was also able to experience the joys of family life in the presence of her four adopted sisters: Naruse Mio, Naruse Maria, Zest who are demons and Chisato Hasegawa who is a goddess.
After several years Zerono under the orders of Zeltrech participates in the 5th Grail War, he invokes a double-class servant Caster and Lancer Scratach-Skadi, during this war of the Grall Zerono having already seen how events will happen thanks to the kaleidoscope decides to take the opportunity to discover a truth about his origins and wants to meet a person in this war to confirm his doubts
Before the war he reconnected with his childhood friend Shirou Emiya and helped him unlock his sleeping magic circuits and gave him advice on how to use the projections
At the beginning of the war he observed Tosaka Rin and Archer against Lancer and witnessed Shirou's death by Lancer's hands.
When Shirou met Saber and found himself in front of Rin and Archer Zerono decided to introduce himself to the master and servant group to propose an alliance to be able to stop the corrupt Grail. thanks to the help of the Zerono class card system, Zerono was able to steal Rider from Matou Shinji with an include Rule Breaker, Killed Matou Zonken to save Matou Sakura from her hell.
Then the group met Illya and Berserker who was defeated thanks to a Zerono power received after an experience from his grandfather.
Then they face the last enemy The King of Heroes Gilgamesh, it is during this fight that Zerono shows his mastery of a marble reality filled with sword compared to that of Archer the swords that are originals reforged there by Zerono during his travels through his Forge Origin.
But it was also during this fight that he discovered that he was the son of the heroic spirit Arthur Pendragon Proto, and that he is a half servant and to defeat Gilgamesh used his Noble Phantasm Excalibur Proto
It is after this fight that our friends can invoke Angra Mayu the god of evil who infected the Grail and defeat him and receive the true Holy Grail Giver of Wishes. Zerono vowed to destroy everything about the Grail in his universe.
A few days later Zerono received the power from the Gamer of Gaia and gave him the mission of saving another world from destruction. But he also discovered that a Seraph of fire named Lailah has lived inside him since he was a child.
On the same day he made his reunion with two of his childhood friends during his travels in the multivers Yuki and Kurumi Nonaka who come from a heroin clan in Japan.
The next day he began his journey to the new world which is a city called Kuoh and notices a large amount of impurity in the city.
After settling in their new mansion and reading all the manga and news about the world where they are that he received from his grandfather, he decides to walk around town, to later save a girl who is the empress of the red dragon from certain death, Himari Hyoudou from the fallen angel Raynare.
The day he entered the Kuoh academy he met a young boy with whom he became friends Takumi Hyoudou Himari's older brother but the latter seems to have devil's origins with the power of Bael and Gremory and Lucifurge.
He also met Koneko Tojou who is a classmate of Kurumi's and so on an incalculable number of events will turn the life of our young hero upside down with old friends, meet a member of his real family, fight against a group of devils
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Zerono Group:
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Family:
Yukihime (Familiar)
Mordred (Sister)
Mio Naruse (Adopted Sister)
Maria Naruse (Adopted Sister)
Zest Akatsuki (Adopted sister)
Chisato Asegawa (Adoptive Sister / Guardian)
Yuki Nonaka (Childhood friend)
Kurumi Nonaka (Childhood friend)
Sonogami Rio (adopted daughter)
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Perrage Team:
Izayoi Sakuya (Queen)
Himari Hyoudou (Pawn)
Yuki Nonaka (Knight)
Kurumi Nonaka (Bishop)
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Servant Team :
Mordred (Saber)
Miyamoto Musashi (Saber)
Scathach (Lancer)
Miyamoto no Raiko (Berserker)
Merlin (Caster)
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Esprit Team (Date to Live):
Tohka (S 1-3)
Yoshino (S 1-3)
Miku Izayoi (S 1-3)
Kaguya and Yuzuru (Yamai sister) (S 2-3)
Itsuka Kotori (S 1-3)
Reine (S 1-3)
Tobishi Origami (S 1-3)
Tokisaki Kurumi (S 1-3)
Mukuro (light novel)
Nia (light novel)
Natsumi (S 3)
Sonogami Rinne (visual novel)
Sonogami Rio (visual novel)
Maria Arusu (visual and light novel)
Marina Arusu (visual and light novel)
Mayuri (Oav)
Takamiya Mana (S 1-3)
Itsuka Shiori (fem Shido)
(S = season)