"Asuna" arc

The "Asuna" arc is the fourth arc of Horizon.

The story follows the girls going in a popular and crowded restaurant at the center of Styrke City. However, Asuna suddenly loses control during her meditation and starts to attack innocent civilians. Then, Lucy and Mikoto proceed to investigate the mystery behind Asuna's sudden loss of control, while they shelter a young girl, Ayami Ryūko, from the imminent danger.

Story Impact

 * Asuna's signature magic, Overdrømmer, makes its debut.
 * Hisui explains that the glitches are often appearing, while the adminstrators don't do anything.
 * Hisui mentions the Pilumnus Institution and its teacher for the first time in the series.
 * Ayami joins Lucy's team.

Characters Introduced

 * Ayami
 * Hisui

Battles & Events

 * Lucy di Meihan, Mikoto Kagami & Ayami Ryūko vs. Glitch Threads
 * Lucy di Meihan & Mikoto Kagami vs. Possessed Asuna Bryndis