~Spoilers ahead~ If anything you should watch the special rather than the anime.
As Publius Flavius Vegetius Renatus said:' Si vis pacem, para bellum.' If you want peace, prepare for war. There lies the strategy of Prince, the organisation that fights the penguins. For all the animes I watched, I have never cringe that much watching the anime. This specials is much better compared to the main anime. The feeling when the special better than the anime. :(
Story: 5/10
The 6 episodes special mainly focuses on certain parts of the anime which is as I explain pretty cringy, rather unwatchable.
Art: 6/10
The animation of the boobs and the surrounding is decent. There are not much paying attention to details then just focusing on boobs.
Sound:6/10
The ending of the specials are rather soothing to the ear and brings a feeling of calm and peace.
Character: 7/10
There are big boobs and small boobs to cater to your needs.
Enjoyment: 7/10
Boobs for everyone. How can there be no enjoyment? Good overall enjoyment. Not too cringy, with nonsensical plot for boob squeezing.
Overall: 7/10
Straight to the point boob squeezing and general boobs, better than the plot and the entire anime. If anything you should watch the special rather than the anime. ~Senpai~