
Time to Get Down to Work is the fourth chapter of the Assassination Classroom manga. Karasuma drills the class in the basics of blade combat, sidelines Korosensei during the lesson, and the chapter closes on the arrival of a dangerous familiar face.
Korosensei looks on while Karasuma runs the students through knife-swinging drills for gym class. Wanting no distraction, the instructor sends the octopus off to amuse himself in a nearby sandbox, and Sugaya adds that his lessons are impossible to copy anyway. Karasuma presses the point that mastering fundamentals matters here just as much as it does in study, since without them the class has no hope of killing their teacher.
To prove it, he invites Isogai and Maehara to come at him with blades, then slips past both without effort. The demonstration lands the lesson that raw enthusiasm means little against trained footwork and positioning.
As the period winds down, Nagisa spots someone he recognizes: Karma Akabane. Karma strolls over to greet Korosensei, then makes his move, attempting to cut him down with blades concealed in his palm. While Karma looms over the teacher, Nagisa fills Kayano in on his background, explaining that Karma was suspended during his second year for a string of violent incidents, which is exactly what landed him in Class 3-E.
Released on July 23, 2012, this nineteen-page chapter belongs to the first volume and bears the Japanese title Kiso no jikan. It follows The Perfect Time to Help Out and leads into Making Time for Karma, serving mainly to establish Karasuma's training philosophy and to formally bring Karma into the classroom.

Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....

There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
Time to Get Down to Work is the fourth chapter of Assassination Classroom, in which Karasuma drills the class in basic blade combat, sidelines Korosensei during the lesson, and Karma Akabane returns to make his first attempt on Korosensei's life.
In this chapter, Karasuma runs Class 3-E through knife-swinging drills for gym class, stressing that mastering combat fundamentals matters just as much as academics if the students hope to kill their teacher.
Karasuma sends Korosensei off to a nearby sandbox during the lesson because he wants no distraction, and Sugaya notes that Korosensei's own fighting style is impossible to copy anyway.
Karasuma invites Isogai and Maehara to attack him with blades and slips past both without effort, demonstrating that raw enthusiasm means little against trained footwork and positioning.
Near the end of the chapter, Karma Akabane returns and greets Korosensei before attempting to cut him down with blades concealed in his palm, while Nagisa explains to Kayano that Karma was suspended in his second year for violent incidents.
Looking for more on Time to Get Down to Work? The Dragon Ball Wiki on Fandom has a dedicated page with community notes.
View on FandomThis content is original writing by Daddy Jim Headquarters based on the Dragon Ball anime series, manga, and official materials. Episode and chapter references are cited where applicable.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
Official resources:
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.