Page 16: - Bearded man in top hat with sweat drops and wide panicked eyes scans surroundings. - Multiple small figures search tunnels in background panels with motion lines. - Usopp appears with surprised expression and sweat drop in close-up panel. - Usopp swings oversized hammer weapon mid-air with dynamic motion lines and SFX. - Large hammer shown impacting from above with exclamation SFX and debris. - Underground tunnel architecture with wooden supports visible in lower panels. - Bearded man in top hat shown with gritted teeth and intense glare in profile. - Panel composition splits search action above and Usopp reveal below. - Sweat drops and motion lines emphasize urgency and surprise reactions. Page 17: - Large black machine with cross symbol and checkered panels smashes downward. - Usopp grips and swings the massive hammer into the machine with impact lines. - Debris and dust clouds fly outward from the central impact. - Mole-like man shows shocked wide eyes and open mouth in lower panel. - Spiky-haired man reacts with sweat drops and exclamation pose. - SFX 'POUND!' dominates the impact panel with radiating lines. - Machine features circular lights and segmented body structure. - Multiple reaction panels show varied expressions of surprise from observers. - Hammer head visibly labeled with weight reference in dialogue. Page 18: - Masked man with curly hair swings large hammer in dramatic overhead pose. - Small silhouetted figure stands alone in desert landscape panel holding hammer. - Usopp stares with wide eyes and open mouth in awe reaction panel. - Mole-like man and spiky-haired man show extreme shock with sweat and open mouths. - Large bold text 'CAPTAIN USOPP.' appears in speech bubble near masked man. - Impact SFX 'どんっ!!!' and '!!!?' fill bottom of page with bold lettering. - Masked man wears black tank top and carries sword on back. - Panel shows close-up of masked man's determined face and muscular arms. - Background flames and sparks visible near masked man's weapon swing.