Page 16: - Colossal fist smashing directly into cylindrical stone fortress causing violent explosion of debris and scaffolding. - Luffy positioned on right edge with wide intense eyes, open shouting mouth, and determined expression. - Massive waves crashing violently around the base of the partially collapsing sea tower. - Large bold SFX dominating upper left area with heavy black lettering and impact lines. - Flying rocks, metal fragments, and dust clouds erupting outward from the impact zone. - Stone fortress showing arched windows, layered brickwork, and broken metal railings mid-collapse. - Luffy's massively stretched arm visible within the destruction cloud. - Small reaction bubble with '!!?' placed near bottom left waves indicating unseen observer shock. - Luffy's body partially visible in profile with spiky hair and open-mouthed shout posture. - Tower structure tilting and fracturing under the force of the giant punch. - White impact lines and speed lines radiating from the fist contact point. - Sea level shown with turbulent splashing water surrounding the fortress foundation.