Reads from right to left

"A young boy from Japan travels to Gotham City on a mission. A year before, his two parents--both scientists--were presumably killed in an explosion that destroyed an experimental power plant. But the boy believes they may still be alive. At the very least, he's determined to find out what actually happened. But his quest soon leads to a run-in with some powerful forces--forces that require help from both Batman and the Justice League!:--Amazon.com

Translated from the Japanese