Child Emperor vs. Sludge Jellyfish

This is the battle between the S-class hero Child Emperor and the Tiger-level monster Sludge Jellyfish.

Prologue
After Child Emperor takes care of Phoenix Man, the young hero sets his sight on freeing the hostage. Meanwhile, several monsters are keeping guard over Waganma. Suddenly, a frog comes hopping out of nowhere and latches itself onto Waganma's face. The other monsters tell him to be quiet, and also question whether or not they should just kill the child. One of the monsters says that since the heroes already began their assault, the hostage's safety was now irrelevant. However, before they can make a move, a gas begins to fill the room. The monsters attempt to not breath the toxic fumes, but eventually, the gas takes effect, killing all of them. It's then revealed that the frog was in fact a robot created by Child Emperor that changed shape into a breathing mask so Waganma would be safe from the toxic gas. Child Emperor then walks into the room, breaks down the cell door, and informs Waganma that he is a hero that has come to rescue him.

Battle
However, before they can leave, Sludge Jellyfish oozes from the ceiling and uses his Sludge Press in an attempt to squish and poison the young hero. However, Child Emperor manages to put up a shield to protect himself from the attack, also noting that Sludge Jellyfish was immune to poisons. Child Emperor takes a tool out from his backpack, and it's revealed to be a sword enveloped with energy. The young hero proceeds to hack and slash at Sludge Jellyfish, but his homogeneous body allows him to remain unaffected by the paring. Several sharp tools and drills stem out of the hero's backpack and stab at the monster, but he is still uninjured. Sludge Jellyfish proceeds to mock Child Emperor's ineffective weaponry, saying the hero has no means of killing him. He then gloats to himself, remarking that luck is on his side and that he's taking the head of an S-class hero with ease. However, as he's confidently monologuing, Child Emperor injects a hose into his body. Sludge Jellyfish asks what was in the hose, and Child Emperor replies that it was liquid fuel. He quickly proceeds to light a match and throws it at Sludge Jellyfish. In an instant, the tiger-level monster is vaporized, ending his life and marking Child Emperor as the victor.