Bl-zz said:bennychloroplast said:2,3,7-15,18 is are the 13 episodes that the reviews talk about, not the first 13 episodes.
Those are 12 episodes, so I don't think that logic pans out here.
Edit: It does make sense that the special was based on the 12 aired episodes, but it's not clear to me whether that's actually the case, nor when it should be watched.
One blog states that it's a compilation based on all 26 episodes.
Another blog states this is, in fact, the 13th episode that the TV network agreed to air. Hmm.
I've decided to watch it after episode 18, since this was the original thirteenth episode.
You are right, the episodes I listed only add up to 12, and this episode itself was the 13th in the original, incomplete airing. I originally got the number 13 from the top reviews for this entry, and didn't bother counting them myself (lol). The rest of what I said stands; not all of the 26 main episodes were planned for the original airing. Due to controversy over violent imagery, the original airing was cancelled after 12 episodes and this episode was made as an impromptu "finale" 13th episode. But the show wasn't abandoned, and the creators went back and added new episodes between the original ones: episodes 1, 4-6, 16, 17 were all created after the 12 episodes I listed and the one this entry concerns.