Cryogenic prison

A cryogenic prison (超低温牢) is located in the section of the Seventh Agency's headquarters, designed by Kokonoe Mercury, created specifically to restrain Azrael. A prison that was more akin to a tomb, where the temperature is close to absolute zero, a room covered in frost and ice. It is here that Azrael had spent two years while remaining imprisoned in cryostasis. He was released in January 15, 2200, at 19:19, by the Seventh Agency's scientists.