Chapter 111

 "Terrible Multiplying Bastard"  (増えるヤバい奴, Fueru Yabai Yatsu) is the 111th chapter of the One-Punch Man manga series.

Summary
Child Emperor notifies other heroes through communication device that he's joined the Surface Team and that the hostage rescue mission is successful. Mizuki is  amazed about how Child Emperor is powerful and Sakingar confirms it. Child Emperor not thinking too much of it, says it was a very close call. He then realized there's no response in communication device and asks if anyone can hear him but there's still no response, worrying if anyone got the message. Child Emperor then asks Sekingar if he (Child Emperor) explained to everyone how to use communication device. Sekingar just says to give heroes some time, thinking they probably can't answer as they're in a battle and can't.

As he finishes speaking, there was a response from communication device: "This is Zombieman" and praises Child Emperor for a job well done. Child Emperor is happy that Zombieman responded and in that moment Sweet Mask responds too saying he will continue to carry out justice. The next hero was Pig God saying good job to Child Emperor and that nothing's out of ordinary, while digesting something. The final voice he heard in that moment was Atomic Samurai. Atomic Samurai confused as how to use communication device talks with himself but then sends message to everyone that he said they sould listen to if they have time. Saying he found a "kid" and Child Emperor is shocked. Child Emperor trying to talk to him, asking how does the kid look like but the transmission's been cut off.

Child Emperor looks at Waganma with scary look, as he is scared. Other heroes are wondering what is going on, if they captured someone else  besides Waganma. Waganma starting to cry telling them he wanted to be rescued and that he's sorry. Child Emperor grabs his backpack saying he has to go and that he leaves Waganma to other heroes on Surface Team. Sekingar is asking Child Emperor if he really wants to go as he's exhausted saying that priority of rescuing Waganma has been completed and asking him if he would consider retreating. But Child Emperor gives him a deathly look, unnerving Sekingar. Needle Star yelling at Sekingar if he doesn't get it, that all lives are equally valuable. Mizuki then says that they should help too so some heroes of Surface Team  agree and are walking towards Child Emperor but he refuses their help saying it's not necessary. that they should all stick to their own taks. Needlstar thinking in awe that about S-class heroes, that he wants to become one too.

Next scene is with Atomic Samurai and Black Sperm talking to each other. Black Sperm gets angry because Atomic Samurai attacked him without warning. He then scoffs at Atomic Samurai's introduction. After Atomic Samurai said he had no business with him, Black Sperm grew a huge muscular arm and asks if he is looking down on him. Atomic Samurai answers his question with a yes and then says that this is an easy win for him before swiftly cutting the arm, saying that he fought countless battles with bastards like him who can transform and shapeshift into giants and that he's used to these opponents. There appears a second Black Sperm while Atomic Samurai gets annoyed. Black Sperm asking him if he still thinks he has a chance to win, that he's a countless number of "me" merged into one entity and saying no matter how you much you kill him in any way, he'll keep multiplying. Atomic Samurai just rapidly cuts his heads in half confidently saying he just has to shower the countless number of Black Sperms with countless slashes to win. Black Sperm still mocks Atomic Samurai before Atomic Samurai slashes him into countless pieces as they begin to come to regrow into new selves quickly surrounding him. Atomic Samurai just cuts them again but they just appear again, jumping on him and getting slashed into more pieces. Black Sperm just multiplied countless times, trapping him on every side saying that it's over for him.