Attack on Titan: Before the Fall (Novel Series)

Attack on Titan: Before the Fall (進撃の巨人 Before the Fall) is a series of three light novels, written by Ryō Suzukaze and illustrated by Thores Shibamoto. The series was later licensed by Vertical and released in English in September 2014 and May 2015.

The novels would later be adapted into a manga series by Satoshi Shiki.

Plot
Set seventy years before the fall of Wall Maria, the first novel centers around a weaponsmith named Angel Aaltonen and his development of what would become humanity's best weapon against the Titans: the vertical maneuvering equipment. The second and third novels chronicle the mysterious origins and life of a boy named Kuklo and his struggle to be accepted by the world around him after being found as a baby in the remains of a Titan.

Novels
In English, the last two novels were released in the compilation volume Attack on Titan: Kuklo Unbound.
 * Attack on Titan: Before the Fall
 * Attack on Titan: Before the Fall 2
 * Attack on Titan: Before the Fall 3