Tsuku Yakutoaru Majutsu No Kinsho Mokuroku (Index) 5 (Dengeki Bunko) [Light Novel]

[Machine Translation] It is the end of the winter vacation in the school city. One morning, Kamijou Touma wakes up to find a mysterious blonde girl named Alice in the same blanket! However, he can't let this situation get the better of him! An armored train carrying the survivors of the "dark club" that was destroyed by the "Handcuffs" has crashed, and the vicious prisoners have escaped. The battle rages on, and the horror of the "Dark Side" is revealed. However, the one that Kamijo and his friends, who knew nothing about the situation, reached out to in a moment of desperation was, of all people, the vicious Hanarou Yoban. The "dark side" that Kamijo and his friends have come to fight with is a little different from the rest. When good-natured idiot Kamijo Touma (with the mysterious girl Alice) and extreme darkness intersect, the story begins-!

冬休み、年末の学園都市。ある朝、上条当麻が目を覚ますと何故か同じ毛布にアリスという謎の金髪少女が!?しかし、この状況に振り回されてはいられない!『ハンドカフス』で壊滅した『暗部』、その生き残りを乗せた装甲列車が衝突事故を起こし、凶悪な囚人達が外に逃げ出したのだ。激化する戦闘、露わになる『暗部』の恐怖。しかし何も知らない上条達がとっさに手を差し伸べたのは、よりにもよって滅法凶悪な花露妖宴で?上条と共闘することになった『暗部』は、少しだけ何かが違う。お人好しバカ上条当麻(謎の少女アリス付き)と極限の闇が交差する時、物語は始まる―!