E8 - The Deep Sea King

Released on 29 November, 2015

In this episode, a monstrous being called the Deep Sea King invades the surface. He defeats several heroes with ease, showing overwhelming strength. Genos bravely confronts him but is severely damaged in battle. Saitama arrives just in time and defeats the Sea King with one punch. Despite saving everyone, Saitama humbly takes the blame to protect other heroes.