Boogiepop Antithesis: Alternative Ego no Rangyaku

is the twentieth volume of the Boogiepop light novel series, written by Kouhei Kadono and Illustrated by Kouji Ogata. It was released under the Dengeki Bunko Imprint in March 2016.

Synopsis
Have you ever thought that the world is wrong? Boogiepop, the long-awaited latest issue!

Have you ever thought the world was wrong? If you are dissatisfied, you must rebel. But what you have to be aware of is that some people will be very annoyed by your actions and that I may be killed by Boogiepop-getting involved in a power struggle within the Reconciliation Organization. Aya Orihata and Masaki Taniguchi have been lost. The challenge for young lovers was to face the shadow of a distorted heart that betrayed themselves. A weak spirit that cannot be decided while thinking for each other afflicts them. What emerges from it is the dangerous curse that once destroyed the world and the confused impatience of those who have lost sight of themselves-the right path to escape from the trap of alternative ego hidden in thoughts. Can you find out ...?

(source: Dengeki Bunko Official Website - Translated)

Characters

 * Boogiepop / Miyashita Touka
 * Nagi Kirima
 * Kazuko Suema
 * Aya Orihata
 * Spooky E
 * Masaki Taniguchi