2.5D Stage Play

ARC 2.5D Stage Play2.5D Stage Play (2.5次元舞台) is the fifth arc of Oshi no Ko manga series. It spans the fifth, sixth, and the first six chapters of the seventh volume of Oshi no Ko. It covers the preparation and rehearsals for the stage play adaptation of "Tokyo Blade", a manga made by mangaka Abiko Samejima, and it also covers the opening night of the play.

Part 1: Rehearsals
To get close to the Lalalie Theatrical Company, where his mother allegedly met his father, Aqua joins the cast for 2.5D stage play adaptation of the popular manga Tokyo Blade. However, the whole project soon risks being canceled due to a conflict between the original author and the play writer.

Part 2: Opening Night
With the writing conflict having been resolved, the play's opening night is set to commence. However, this brings several participating actors on a collision course with their personal demons. This includes Aqua, who must learn to act using his emotions, forcing him to face his trauma regarding his mother's death.

Characters Introduced

 * Toshirou Kindaichi
 * Goa
 * Taiki Himekawa
 * Sakuya Kamoshida
 * Abiko Samejima
 * Norio Mita
 * Mei Adashino
 * Koyuki Yoshidomi
 * Kiiro Hayashibara
 * Ryouma Funato

Trivia

 * This is the longest arc of Oshi no Ko manga series so far, covering 26 chapters and spanning across three different volumes.