滅亡の暗号　上 / 12.21

The story’s tension builds around this looming event, and I wonder what sparked the idea of such a specific date and scenario.

The plot had some slower moments before picking up again, and I’m curious if that was a deliberate choice to build suspense or just natural flow.

The multiple viewpoints kept the story dynamic, but I’d love to know what led to structuring it this way—was it planned from the start?