Synopsis by Cammila Collar
After becomming involved with some mysterious research, Ai and Yu's parents have disappeared . The two children go out in search of their mother and father and find themselves at an abandoned subway terminal, which turns out to be a gateway to another dimension. Now, with two unlikely companions--one of whom can conjure spirits from the gun on his arm--there is an adventure to be had in another world. The series includes trademark elements of the Final Fantasy franchise such as Cactaurs and Chocobos.