I'll keep this one short as there is no need to make this review long. So if you are lucky enough and find this specials you'll experience 7 episodes, which are 2 minutes long, that's pretty lazy. If you watched Sin: Nanatsu no Taizai you know there's gonna be some fanservice . Every episode starts with of our MC Maria praying to the god and everyone of her's prayer is somewhat related to her maou "friends". Specials has some decent fanservice. but 2 minutes eps. only are quite dissapoiting. At least have it 5 minutes long or so. Conclusion: Personally I think you can watch itif you love the fanservice. If you find it, give it a shot, potentially you will lose "only" 14 minutes of your life max, so it won't be that of a catastrophe.