Eternal Alice

Average high school student Aruto Kirihara is obsessed with the Alice stories, written in this alternate world by the enigmatic recluse, Alternite L. Tachyon. One night, while writing his own version of a potential "third book," he sees a girl flying in front of a full moon... and she looks just like the "Alice" in his imagination. Aruto runs out of his house and chases the flying figure from the ground, ending up at a library, where he witnesses her in combat with another costumed girl. And so...