Ansatsu Kyoushitsu: Deai no Jikan

Reviewing a special... I've always wanted to do this. XD

So this episode is a little 10 minute extra to the main series which chronicles the first encounter between Karasuma and Korosensei, as told from Korosensei's point of view.

This is pretty much comic relief for followers of this series since season 1 ended in a somewhat abrupt manner. It starts off on a serious note with Karasuma locking horns with Korosensei for the first time in a dank jail cell as the slimy octopus states his various demands and what not, and then the episode ends in a somewhat unexpected manner. The art and soundtrack ... are all consistent with that from the main series.

If you are wondering whether this episode is important, then wonder no more: it does not contribute to the plot in any way, so you may choose not to watch it. There are no teasers, no foreshadowing whatsoever. However... if you have seen season 1, then I do recommend you watch this just for the sake of closure.

I mean, this little ten minute episode was fine. It kind of shows how Koro-sensei and Karasuma met, but not really, which you'll understand once you watch it. Given that "not really" is a part of how accurate these two characters' first meeting was, I don't think it's sensible to call this a prequel, so if I were you, I wouldn't bother watching it. It's funny enough, but without the element of the kids in the classroom, it doesn't hit the same. This OVA, like the rest of Assassination Classroom, did the more serious/creepy tone very well. But if you came to Assassination Classroom for ... the humor, there isn't much of it in this OVA. I do think this episode would have been interesting had it been about the moment Koro-sensei stated his intent to teach the E class, but it's not actually necessary to see. So, I suppose this OVA just took the chance to tell a short story as a little precursor to Koro-sensei being introduced to his class. Like I said: it's fine. Nothing remarkable.