Manga/Volume 5

This is the fifth volume of the manga series, The Eminence in Shadow (陰の実力者になりたくて！).

Synopsis
異世界に転生し「陰の実力者」設定を楽しむシド. 目の前に現れたドアの向こうは聖域という名の「記憶の牢獄」. 闇に葬られた数々の真実が明らかになるが――？強大な力と重度の勘違いで切り抜ける最強奇譚、第５弾！
 * -|English = In the depths of the Sanctuary, where ancient memories of mighty warriors slumber, Shadow Garden lays bare the long-hidden truth behind the demon Diablos and the hero Olivier—all very critical plot information that Cid pays zero attention to because it’s time for the semiannual Bushin Festival! Playing the part of a weak-looking guy who’s actually super-strong is Cid’s raison d’être, and where better to strut his stuff than a tournament arc?
 * -|Japanese = ここに四肢を拘束された美女がいます. とりあえず助けてみませんか？

Holy Ground Infiltration
After sending a letter to Cid to come to Lindwurm, Alpha meanwhile examines the murder of Archbishop Drake, however, her focus remains on the truth regarding the Hero Olivier and the Holy Ground.

As such, after Shadow defeats the Witch of Calamity Aurora during the Trial of the Goddess, Alpha and Shadow Garden seizes the opportunity to investigate the Holy Ground, forcibly bringing acting Archbishop Nelson, as well as Princess Alexia and Rose Oriana unexpectedly.

Within the Holy Ground, Alpha reveals her lineage with Olivier, as well as her ancestor's history and goal of the Order of Diabolos until Nelson attempts to retaliate. Along with Delta, the two repels the Knight of Rounds' onslaught before retreating upon the completion of their investigation.

Later, after the destruction of the Holy Ground by their master, Alpha is briefed of the situation by Epsilon who then announces the results of their research, revealing Aurora as the true identity of Diabolos.

Chapters

 * 17. Episode 17
 * 18. Episode 18
 * 19. Episode 19
 * 20. Episode 20
 * 21. Episode 21

Characters

 * In order of appearance: