Spoiler Summary [Click to show or hide]:
In One Punch Man Chapter 139, Manako, Flashy Flash, and Saitama investigate a dark hole using Manako’s searchlight.
Despite shining the light on Saitama’s head, they see nothing until they hear a voice urging them to touch the box.
Suddenly, a mini black hole appears behind them, revealing Blast, who appears wearing shades and his hero uniform. Blast effortlessly picks up the cube and spins it, prompting questions from the trio.
As the voice recognizes Blast, he sends the cube to another dimension.
Doubtful, Flashy Flash attacks Blast with “Flashy Kicks,” but Blast appears behind him, surprising him. Blast notices Manako, making her nervous, but Saitama explains her role as their guide.
Blast creates a black hole below them and leaves, taking them with him.
Meanwhile, on the surface, Child Emperor blames himself for excluding Bang and Genos, but Zombieman consoles him. Suddenly, glowing lights show up and approach them, causing a massive explosion.
Zombieman’s body is destroyed, and Homeless Emperor appears.
Tatsumaki, in another scene, throws the giant, glowing spear at Orochi below, causing the ground to crack and the spear to penetrate downward.
It burrows deep underground, completely destroying Orochi and reaching a sacrificial altar.