Yingxiong Zai Lin

Watch Yingxiong Zai Lin kissanime
Other name: The Hero’s Return, Yingxiong? Wo Zao Jiu Bu Dang Le, 英雄？我早就不当了, Hero Return, 英雄再临
Plot Summary: Zero was mankind’s first real superhero. Under his watch, countless other superheros appeared and followed in his footsteps. However, after 5 years of war, Zero disappeared without a trace.