The special is great, but there are some parts in the manga that would have been epic if they added it on the anime but overall it is great, it really shows the backstory of Tatsuya and I would have love it even more if they show more demon light action (kinda epic when the enemy gets disintegrated into dust.) They announced another sequel and I cant wait for it. I have already read both the manga and the light novel and it never cease to amaze me. I really do hope that they continue this series, it is a masterpiece that not many peopleknow about outside japan. I would love to rewatch the whole series again. The animators, the staff, and everyone working behind the scene did an amazing job for this series. 100/10 it cured my depression.