An episode acting as a bridge between season 1 and season 2 of Monster Strike.
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- A strange phenomenon is overtaking the world?! -

After defeating the War Gods, Ren and his friends are living the dream. It seems like they've finally managed to regain their normal lives. However, a mysterious girl by the name of Pandora appears, bringing with her a box that must never be opened. An unfortunate incident results in the box opening (of course), setting the world up for some big changes...
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(Source: YouTube)