死を呼ぶ暗号

The story moves quickly through the mystery but also spends time on the characters' inner worlds. I'm curious how those choices were made during writing.

The visuals seemed to add an extra layer of tension and mood—was that an intentional focus during the illustration process?

The city feels alive and layered, almost like a character itself. I'm wondering what inspired the world-building behind this gritty environment.