Theme of Thus Spoke Kishibe Rohan & FINDING THE TRUTH

"Theme of Thus Spoke Kishibe Rohan" (岸辺露伴は動かないのテーマ) is the opening instrumental theme and "FINDING THE TRUTH" is the ending theme song for the Thus Spoke Kishibe Rohan original video animation series. Both are composed and arranged by Yugo Kanno, while the ending theme "FINDING THE TRUTH" features vocals from Coda with lyrics written by Karen Aoki, one of the vocalists who performed "Great Days". A digital single of both tracks was released on July 19, 2018, the same date as the release of the 2nd Thus Spoke Kishibe Rohan manga collection and OVA episode.

Description
The opening opens on the main title, with black ink flowing in the background, covering the screen and acting as a fade to black. Rohan then emerges and opens his eyes; as he raises his fountain pen to draw, the camera zooms into the slit of the nib.

A continuous flow of black ink then occupies the screen, taking several forms. First a raised arm which is transformed into a book, a falling woman, then an unidentified human silhouette also transformed into a book, and finally two silhouettes of Naoko Osato and Gunpei Kamafusa. The camera then zooms into Gunpei's head, revealing a white line from which splurts some white ink, staining the screen.

The camera then pans to reveal Rohan, sitting alone at a table in an empty room. The light dims until only Rohan's silhouette and the windows's exterior are visible against the pitch black background. The opening finishes with the episode title.