After getting the first three most powerful heroes in their team to beat the demon king Koro-sensei they still had one hero left to defeat and join them to finally have the power enough to beat the demon king!

But this was going to difficult, that’s what most of them thought, except some of them like the other three powerful heroes, more specifically The Red Devil aka Karma, Nagisa’s childhood friend who thought the fourth one would be a piece of cake, a pan falling on his head as he looked down on them thanks to his unlucky bug.

The fourth one was actually hidden in their enchanted lake, the dream verdant, a beautiful aqua green clear water lake that could take you to a pocket world full of beautiful creatures and tons of obstacles and traps for intruders.

When they faced the lake, Koro-sense dived deep in it, quickly followed by Itona and Karma, who felt confident about this hero being easy to defeat.

Once they were located inside the pocket world, a jellyfish swarm appeared in front of them, apparently they were the first defence force in the Sorcerer’s den, but what they didn’t expected was the Jelly Bio sorcerer to appear in front of them.