Reflection (反射, Hansha) is an extra chapter included with Volume 32.
Summary[]
In outer space, the Secret Space Force, a group of aliens, approaches Earth in multiple spaceships after the defeat of Boros. They correctly identify Saitama as the one who defeated the leader of the Dark Matter Thieves. Positioning their ships at a safe distance to avoid the shockwaves from their super weapon, an unnamed alien leader then commands the fleet to unleash the full power of their cannons, targeting Saitama directly. Upon striking his bald head, all the laser beams harmlessly bounce off, redirecting back toward their own ships and ultimately destroying them all.