Itsuwa and the Amakusa Church struggle to defend Touma from Acqua of the Back, but it seems like even their combined strength won’t be enough...until their own ace in the hole arrives! Kaori Kanzaki returns to aid her comrades in their hour of need, setting the stage for a deadly duel. Will there be anything left of Academy City after the two saints clash?

Touma Kamijou just can't catch a break. He might live in Academy City, a place full of more super powered students than you can shake a stick at, but his only superpower is his supernatural lack of luck. He wants nothing more than to keep a low profile, but when a girl named Index comes into his life, it gets more complicated and dangerous than ever!

Item’s battle comes to a head as their hideout is raided, and the team reaches its breaking point. Disgusted with Mugino’s disregard for the other members’ lives, Hamazura finds the resolve to stand up to her. Mugino may be a Level Five, one of the strongest espers in Academy City, but she’ll see that even a powerless Level Zero like Hamazura can put up a fight when his back is against the wall!

"First published in Japan in 2019 by Square Enix Co., Ltd."--Colophon.

Index and Touma are ordered by the Queen of England to investigate the Eurotunnel bombing incident. The perpetrators—an organization called “New Light”, whose plans promise to bring massive changes to Britain! Can Touma intercept them in time to stop their scheme before it gets out of hand?!

Kazakiri has only begun to see what her terrible secret is. Meanwhile, Sherry Cromwell's plan to tear apart the worlds of Magic and Science by is coming to a head--unless Kamijou Touma can do something about it first!

The horrifying experiment to make Accelerator into an all-powerful Level Six has commenced--and it involves the wholesale slaughter of the little sisters cloned from Mikoto Misaka. Can Touma find a way to stop the seemingly invincible Accelerator? Could it be that weakness is stronger than strength could ever be?

Touma Kamijou's life is one of perpetual misfortune, which is why no one is more surprised by his sudden stroke of luck than Touma himself! Having won a trip for two to Venice, the City of Water, Touma and Index are excited for a European excursion. But the Italian peninsula is the home of the Roman Orthodox Church, and when old friends and foes alike show up, Touma's hopes for a relaxing getaway might just get washed away!

Index faces the biggest threat to her life thus far: the assassin Kanzaki Kaori--and Touma's right hand is useless against her! When Kaori reveals the truth behind Index's very existence, Touma realizes just how bad his unlucky streak has gotten...

The latest clash of magic and science in Academy City is leaving bodies strewn across the streets! As Accelerator takes on Amata Kihara and the secret ops team known as Hound Dog, an intruder from the Roman Orthodox Church-Vento of the Front-infiltrates the city to crush Touma and his Imagine Breaker. With Touma and Accelerator fighting for their lives, will their paths converge and turn old enemies into erstwhile allies?