A story about two young demons who are always slacking off at work, a place that happens to be an organization that vows to keep the balance between the worlds of the living and dead by killing humans! (Source: Cave Scanlations)

Short episodes streamed on the anime's official site after every episode, giving background information about the show.

Duan Jiaze inherited a private zoo and was forced to sign a contract after his graduation. And from that day onwards the first ever age classified Luya zoo appeared, those aged under 21 are prohibited to enter. (Source: Twitter User Xiyoumiyu)

In the year of 2013, the tide of zombies outbreak exploded in everyone's homeland, humanity launches a large-scale battle in the endless nights awaiting for the arrival of the dawn. The end is approaching, is there going to be a way out for them? Their faiths were shattered into pieces and buried in ashes in the raging fire. But within the blazing fire, a newborn hope arise once again.