Ansatsu Kyoushitsu: Deai no Jikan

One of the best specials i've seen (i didn't see much, though). The other one would be Steins;Gate one.
It is "kinda prequel, kinda not"

It's interesting, it's fun, it's compact. It also has good music, like an original show. Yes, it doesn't add much to the series, but then, how many specials do?

It's actually not that bad to watch on its own, without series, because of how story is served

I absolutely recommend this concentrated fun package. It won't take a lot of your time anyway. Also, you can use it as the show ad to agitate friends! If that is even possible

...I don't know what ... else to type without spoilers about non-serious 10-minute show, but this site forces me to write a longer review, so be it, i am making it longer, just to make system happy and everyone reading this too, so long, just wow...

Assassination Classroom: Meeting Time is a cute 10 minute episode about how Koro-sensei met Karasuma that you can watch at any point before, during or after the main anime for a bit of extra content.

The story is very simple and it just concerns a first meeting between Koro-sensei and Karasuma, who are therefore the two main characters in this special. Their personalities are neat and reflective of the main anime.

The animation is quite good and it has the same animation style/quality as the main anime. The voice acting and sound are also good and the voice actors are all the same as in ... the main anime as well.

Overall this is a fun small special to watch for a bit of extra content.

This episode of Assassination Classroom doesn't add much to the show apart from displaying the fact that Koro-sensei blows stories out of proportion, exaggerates to make himself look cool, but is more endearing than pretentious.

The episode depicts the two sides of how Koro-sensei and Karasuma met - Karasuma tells it how it is, Koro-sensei tell it how he wishes it was. Koro-sensei's narration is humourous and engaging, albeit unrealistic.

The animation is not as good as the actual show, but is still passable. There is no music to be noted especially. The two main voice actors (Jun Fukuyama and Sugita Tomokazu) perform well as they always ... do.