Ep 18. Action Time

After a comprehensive study of the Koro-sensei, the students have become more united and more determined to get rid of their teacher. They know every weakness of Koro-sensei, his strengths, and his abilities, but they still couldn't find a way to beat him. This is because Koro-sensei is much smarter, quicker, and more powerful than they can ever be.

The students have learned that Koro-sensei can move at a speed of Mach 20, and his body is immune to all known weapons. The only thing that can hurt him is a special alloy made by a scientist who has never been seen or heard of. Their hopes of finding this scientist are slim to none, but that doesn't stop them from trying.

As the term progresses, the students find themselves struggling to keep up with their studies—especially Nagisa, who is starting to realize that there is more to life than just killing Koro-sensei. He starts to question his resolve and his place among his classmates. Nagisa begins to doubt himself and his abilities, wondering if he has what it takes to be an assassin. But with the help of his classmates, Nagisa finds the courage to face his fears and puts on a brave front, even though he is not feeling so confident.

One day, Koro-sensei announces that he will take a day off from teaching, and he will let the students have an "Action Time." This is an opportunity for the students to drill a hole in their classroom wall and practice their battle skills using their new weapons. The students can't believe their luck, and they start preparing for the day eagerly.

On Action Time day, the students show off their new weapons and techniques. They have developed new strategies and tactics to try and match Koro-sensei's speed and agility. Each student demonstrates their own unique style and approach, and the teachers watch on, impressed by the students' progress.

However, things take an unexpected turn when Koro-sensei decides to join in the fun. The students are surprised, but they take the opportunity to try and defeat him. Koro-sensei is quick to dodge and weave through every attack, but he praises the students for their efforts. Even Nagisa, who is often overshadowed by the other students, manages to land a blow on Koro-sensei. The students cheer their little win, but Koro-sensei is quick to remind them that he has only been playing so far.

The students don't give up, and they continue to try and defeat Koro-sensei through various means, including traps, explosives, and even trickery. The students are working together and using their strengths to try and create the perfect plan to beat Koro-sensei. Nagisa is also trying to think of a plan, but he is struggling to come up with anything worthwhile.

As the day progresses, and as the students continue to try and defeat Koro-sensei, they start to realize that there are more important things in life than just killing their teacher. They start to appreciate the time they have spent together, the bonds they have formed, and the lessons they have learned. They realize that life is not just about being the best assassin, but it's also about being happy.

The end of Action Time brings mixed emotions for the students, as they have to return to their studies and continue with their assassination attempts. But they are more determined than ever to defeat Koro-sensei, and they go back to work with a renewed sense of purpose. Nagisa also learns to trust himself and his abilities, knowing that he has a special place among his fellow students.

As the episode concludes, the students are left with an uncertain future, but one thing is clear—whatever happens, they will always have each other's backs.