The BEST episodes of A Certain Magical Index season 1

Every episode of A Certain Magical Index season 1, ranked from best to worst by thousands of votes from fans of the show. The best episodes of A Certain Magical Index season 1!

Set in Academy City, a city of scientifically advanced superhuman students, located to the west of Tokyo, in a world where magic is also real. Kamijou Touma's right hand, the Imagine Breaker, can negate all magic, psychic, or divine powers, but not his own bad luck. One day he finds a young girl, Index, hanging on his balcony railing. She turns out to be a nun from the Church of England, and her mind has been implanted with the Index Librorum Prohibitorum — all the magical texts the Church has removed from circulation. His encounter leads him to meet others from the secret world of science and magic and right into an adventure where science and magic collide.

Last Updated: 12/16/2024Network: AT-XStatus: Ended
Accelerator (One Way)
star
8.34
218 votes

#1 - Accelerator (One Way)

Season 1 - Episode 13 - Aired 12/28/2008

During a trip the bathhouse, Komoe offers insight on the awakening of esper powers to Index and Himegami. Later, Mikoto is skeptical when Kamijo volunteers to take on Accelerator in battle.

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Imagine Breaker
star
8.33
229 votes

#2 - Imagine Breaker

Season 1 - Episode 6 - Aired 11/9/2008

Kamijo succeeds in eliminating the magical threat to Index’s life. Unfortunately, his memory is erased in the process! Later, Stiyl’s boss orders him to work with Kamijo. Their assignment: Find “Deep Blood.”

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Weakest vs. Strongest (Strongest vs. Weakest)
star
8.33
246 votes

#3 - Weakest vs. Strongest (Strongest vs. Weakest)

Season 1 - Episode 14 - Aired 1/8/2009

Kamijo fights Accelerator to gain a better life for Mikoto and her clones. When the battle ends, Misaka 10032 visits Kamijo in the hospital to discuss the steps that must be taken for the clones to adapt to life in Academy City.

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Imaginary Number School District - Five-Element Agency
star
8.32
173 votes

#4 - Imaginary Number School District - Five-Element Agency

Season 1 - Episode 24 - Aired 3/19/2009

Kamijo, Index and Kazakiri join forces to take on Ellis. When the battle ends, and with the support of Index, Kazakiri returns to the place of her origin. Later, Tsuchimikado ponders Aleister’s role in recent events.

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Academy City
star
8.30
350 votes

#5 - Academy City

Season 1 - Episode 1 - Aired 10/5/2008

Kamijo meets Index, who is on the run from a magic society that wants the library of forbidden knowledge stored in her memory. Later, Kamijo is shocked to find Index at his house – bleeding and accompanied by a strange man.

Directors: 錦織博
Writer: 赤星政尚
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Deep Blood (Vampire Killer)
star
8.26
226 votes

#6 - Deep Blood (Vampire Killer)

Season 1 - Episode 9 - Aired 11/30/2008

Aureolus finds his plan to turn Index into a vampire thwarted and learns that Kamijo has already saved Index’s memory. Overwhelmed by anger and jealousy, the alchemist attacks Kamijo in a fit of murderous rage.

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Level 6 (Absolute Ability)
star
8.23
215 votes

#7 - Level 6 (Absolute Ability)

Season 1 - Episode 12 - Aired 12/21/2008

Kamijo learns that thousands of Mikoto clones were created for one simple, violent reason. Now that her look-alikes are dying off, the real Mikoto vows to save the rest of her doppelgangers by making the ultimate sacrifice.

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Mikoto Misaka (Sissy)
star
8.21
164 votes

#8 - Mikoto Misaka (Sissy)

Season 1 - Episode 10 - Aired 12/7/2008

Kamijo senses something odd about the relationship shared by Mikoto and Misaka, who appears to be Mikoto’s twin. Later, after a friendly meeting with Kamijo, Misaka has a much more intense encounter with Accelerator.

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Innocentius (The Witch Hunter King)
star
8.20
305 votes

#9 - Innocentius (The Witch Hunter King)

Season 1 - Episode 2 - Aired 10/12/2008

Kamijo tangles with Stiyl, upset with the magician’s rough behavior toward Index. When quick thinking allows Kamijo and Index to escape, they head to the one person that might be able to help them.

Directors: 錦織博
Writer: 赤星政尚
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Perfect Memory Ability
star
8.14
289 votes

#10 - Perfect Memory Ability

Season 1 - Episode 4 - Aired 10/26/2008

Kaori Kanzaki confronts Kamijo, demanding that he hand over Index. Kamijo is wounded in the ensuing scuffle – and when he wakes up a few days later, Index offers to take drastic measures to protect him from further harm.

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Limit (12 o'clock)
star
8.14
227 votes

#11 - Limit (12 o'clock)

Season 1 - Episode 5 - Aired 11/2/2008

When Kamijo springs into action to prevent Kanzaki and Stiyl from erasing Index’s memory, he learns there’s a chance that the Church was lying about the threat to Index’s life all along!

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Last Order (The End)
star
8.12
180 votes

#12 - Last Order (The End)

Season 1 - Episode 19 - Aired 2/12/2009

Accelerator meets the last of Misaka’s clones – Last Order – who explains the special role she played in the Sister experiment. Later, Accelerator learns what steps he’ll have to take to keep Last Order safe.

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Virus Code (Final Signal)
star
8.12
181 votes

#13 - Virus Code (Final Signal)

Season 1 - Episode 20 - Aired 2/19/2009

After Accelerator frees Last Order of the virus infecting her brain, he’s attacked by gun-wielding Amai. Just as all appears lost for Accelerator, Yoshikawa arrives to help – but Amai isn’t going down without a fight.

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Replica (Impostor)
star
8.11
210 votes

#14 - Replica (Impostor)

Season 1 - Episode 18 - Aired 2/5/2009

In order to shake off the unwanted attention she’s getting from Unabara, Misaka asks Kamijo to pretend to be her boyfriend. Things get complicated when the faux-couple discovers that Unabara is hiding a magical secret.

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The Power of God (Archangel)
star
8.10
236 votes

#15 - The Power of God (Archangel)

Season 1 - Episode 17 - Aired 1/29/2009

After figuring out the truth of Misha’s real identity, Kanzaki sends Kamijo and Toya to destroy the ritual spot. When Tsuchimikado suggests that Toya must die for the spell to end, a violent – and seemingly fatal – encounter ensues.

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Toya Kamijo (Father)
star
8.09
202 votes

#16 - Toya Kamijo (Father)

Season 1 - Episode 16 - Aired 1/22/2009

After Kamijo and Tsuchimikado rush to confront Misha about her suspicious behavior, they realize that Toya might have something to do with the Angel Fall spell. Can Kamijo save his dad from the Russian sorcerer’s wrath?

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Sisters (Sisters)
star
8.08
243 votes

#17 - Sisters (Sisters)

Season 1 - Episode 11 - Aired 12/14/2008

Kamijo is surprised – and confused – by the sudden arrival of yet another Misaka doppelganger. When the new look-alike explains why there are so many Mikotos running around, Kamijo decides to investigate.

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Necessarius (The Church of Necessary Evil)
star
8.06
268 votes

#18 - Necessarius (The Church of Necessary Evil)

Season 1 - Episode 3 - Aired 10/19/2008

Kamijo learns more about Index’s history with Necessarius, the Church of Necessary Evil. Later, after a trip to the bathhouse leads to an argument with Index, Kamijo finds himself in the company of a mysterious stranger.

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Angel Fall (Angel Fall)
star
8.01
205 votes

#19 - Angel Fall (Angel Fall)

Season 1 - Episode 15 - Aired 1/15/2009

After Kamijo travels to a beach-side resort to meet his family, he winds up tangling with a Russian sorcerer named Misha. Later, Kanzaki and Tsuchimikado explain the ramifications of a recently cast spell called Angel Fall.

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Ars Magna (Golden Transmutation)
star
7.93
251 votes

#20 - Ars Magna (Golden Transmutation)

Season 1 - Episode 8 - Aired 11/23/2008

Kamijo and Stiyl quickly fall under attack after infiltrating Misawa Prep School! During the raid, Kamijo runs into the girl they hoped to rescue – but there’s a chance she isn’t interested in leaving the campus!

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Golem (Stone Figure)
star
7.91
207 votes

#21 - Golem (Stone Figure)

Season 1 - Episode 22 - Aired 3/5/2009

Panic ensues in Academy City upon the arrival of the sorcerer Sherry Cromwell, who makes no secret of her plans to destroy Kazakiri! Kamijo steps up to ruin Sherry’s plot – but the situation is more complex than he knows.

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The Science Cult (Misawa Cram School)
star
7.79
252 votes

#22 - The Science Cult (Misawa Cram School)

Season 1 - Episode 7 - Aired 11/16/2008

Stiyl tells Kamijo (who has no memory of the sorcerer) about his plan to raid Misawa Prep School in order to rescue a young girl who wields a vampire-summoning power known as Deep Blood.

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Counter Stop (Identity Unknown)
star
7.78
205 votes

#23 - Counter Stop (Identity Unknown)

Season 1 - Episode 21 - Aired 2/26/2009

School’s back in session and that means new transfer students – one of which is Index! In class, Komoe offers more insight into the realities of life as an esper – and a powerful new magical presence is detected in Academy City.

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Friends (Hyoka Kazakiri)
star
7.77
205 votes

#24 - Friends (Hyoka Kazakiri)

Season 1 - Episode 23 - Aired 3/12/2009

Kamijo chases Sherry away only to discover the sorcerer now has designs on Index! Meanwhile, with her secret revealed, Kazakiri takes advantage of her new situation and sets out to fight Ellis.

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