One-Punch Man. Volume 15

Upon opening a portal to a parallel world, Saitama, Flash, and Eyeball had no idea they would meet… Blasto — a hero rightfully occupying the first place in Class S! What is his purpose for searching for the mysterious cubes? Does he really want to engage in battle with the higher powers?! Meanwhile, the heroes on the surface are having a tough time: a fierce battle is underway with the monstrous beings from the ruling elite of the Monster Association. Jenos's energy core is already overloaded to the point of imminent explosion! And there isn't a single unscathed spot left on Terrible Tornado…