SO Volume 15

Heavy Weather (ヘビー・ウェザー) is the fifteenth volume of Stone Ocean and the seventy-eighth volume of the JoJo's Bizarre Adventure manga. It covers most of the  story arc.

Chapters

 * 127 (721). 
 * 128 (722). 
 * 129 (723). 
 * 130 (724). 
 * 131 (725). 
 * 132 (726). 
 * 133 (727). 
 * 134 (728). 
 * 135 (729). 

Trivia
In the French edition by Delcourt Tonkam, a lot of characters's names are swapped in the summary for previous volumes. Weather Report and his Stand are called Foo Fighters, Ermes Costello is called Emporio, and her Stand is only called "?", Donatello Versus is called Father Enrico Pucci, his stand is also called Whitesnake and Pucci is called the Green Baby, while his Stand is also referred as "?".