Page 17: - Massive black dragon with large horns and antlers erupts from dark clouds with flames and smoke trails. - Dragon body shows detailed scales and segmented coils dominating the upper page composition. - Large impact SFX lines and repeated ゴゴゴ vibrations surround the dragon indicating heavy presence. - Dragon head positioned centrally with open roaring mouth and visible fangs. - Small human figures shown fleeing or looking upward in lower panels near the dragon's emergence. - Scarred man with short hair displays wide eyes and sweat drops in close-up realization panel. - Luffy shown with spiky hair, wide shocked eyes, open mouth, and sweat in extreme close-up. - Large horned man identified as Jack appears with intense expression and motion lines. - Multiple small reaction panels stacked vertically showing skyward gazes and panic postures. - Speech bubble placement emphasizes dragon's command from upper right of main panel. - Narration box at bottom left states sudden arrival of the boss. - Background clouds and smoke create swirling motion around dragon form. - Jack's subordinate figure shown in lower right panel responding with raised hand. - Luffy's panel includes small chibi reaction face beside main shocked expression.