Kuroko Shirai is embroiled in a case that involves her beloved "big sister," Mikoto Misaka. As Kuroko squares off against a fellow teleporter for the remains of the orbital supercomputer known as the Tree Diagram, the effects of their battle reach far and wide--affecting Mikoto, Touma, the worldwide network of Misaka clones...and even Academy City's strongest esper, Accelerator!

Life has mostly returned to normal for the high schooler who knows nothing but misfortune, Touma Kamijou. But in a stroke of unbelievably good luck, he manages to snag two tickets for an overseas getaway trip! Of course, Kamijou is a veteran by now and immediately searches for a sinister trap or a hidden downside to this strange turn of events.Unable to find anything obviously wrong, he anxiously sets off with Index to visit Venice, the "City of Water." Could this actually be a chance to rest, sightsee, and maybe even have a heart-throbbing romantic rendezvous? Just as Kamijou begins to relax and enjoy himself, he can't help but notice some strangely familiar faces hanging around...Is everything really going Kamijou's way for once, or is there something more to this too-good-to-be-true adventure??

Kuroko Shirai is embroiled in a case that involves her beloved "big sister," Mikoto Misaka. As Kuroko squares off against a fellow teleporter for the remains of the orbital supercomputer known as the Tree Diagram, the effects of their battle reach far and wide--affecting Mikoto, Touma, the worldwide network of Misaka clones...and even Academy City's strongest esper, Accelerator!

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!

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!

A FULL COURSE OF CRAZY Accelerator raids an insanity-laden banquet thrown by the Dark Side, where all sorts of taboo foods are served! How will he fare against the Full Course espers who use innocent children as ingredients? Darkness meets darkness in this volume as the Nectar Arc charges toward its finale!

Acqua of the Back, saint and member of God’s Right Seat, issues a challenge to the English Puritan Church and Academy City: He’s coming for Touma’s right hand and will crush any who get in his way! Itsuwa is dispatched as a bodyguard, but how will Touma explain this new unexpected houseguest to Index?