Page 18: - Lucci analyzes Luffy's internal body mechanics during their fight. - The scene occurs inside a heavily damaged multi-level building. Page 19: - Lucci reveals incoming marine headquarters warships as a threat. - Explosions were heard earlier as test firing from warships. Page 20: - A massive explosion destroys part of the underground passage. - Seawater threatens to flood the area and drown those inside. Page 21: - Marines prioritize capturing Nico Robin amid incoming warships. - The Bridge of Hesitation becomes a site of panic and explosions. Page 22: - Buster Call fleet of Marine warships is advancing. - Multiple Marine officers are shown observing the fleet movement. - Chapter 420 page 22 depicts the start of the Buster Call.