Assassination Classroom: Graduation (Blu-ray release 2016-10-12) is part 2 of the live action adaptation of the manga.  While the previous part focused on the action which was full of fun, this second part spends much more time on the backstory.  We now learn the origin of the octopus teacher, his relationship with the previous female teacher of the class and why he comes to teach, what really happened to the moon, and surprisingly (to me, since I’ve not read the manga or the watched the anime) get a complete and closed ending.  Although we get less action this time, the emotional core is much stronger.  The ending is not quite what I expected, but it is satisfying in its own way.