If you're planning to watch this Special episode before starting the main Anime, I strongly do not recommend it. This episode essentially condenses the first 10 episodes of the Anime, with a few minor spoilers for the following 10 episodes. Being the eager viewer that I am, I thought watching it in "chronological order" would enhance my experience. However, this ended up ruining the surprise and excitement of those initial episodes - it was mostly a boring watch. I already knew what would happen, and it felt like a predictable sequence of events. Although the Anime takes a different approach to presenting these events, the outcomes remainthe same. This episode spoils the plots, twists, and character introductions for the first 10 episodes.

I still recommend watching it, but only after you finish the entire anime or at least the first 20 episodes. It offers a slightly different approach to presenting events and executes certain aspects better. However, it's not worth spoiling the experience for yourself by watching it too soon.

So, enjoy Beelzebub to the fullest, but save this Special episode for later. You won't regret it.