After being devastated in the third World War (known as The Third Division), Japan was divided in two. Several years after the end of the war, a crime organization called Vischio has taken control of the destroyed city of Toshima (formerly Tokyo, Japan’s capital city), where they are holding a battle game known as “Igura”.

The game’s main character, a young man named Akira, is falsely accused of a crime. Once arrested, a mysterious woman appears before him, offering him freedom if he agrees to participate in Igura and defeat Igura’s strongest man: the king, or “Il re”. The story follows Akira’s life in the harsh, lawless Toshima as he fights both to survive and to unravel the mysteries developing around him.

One day, Sora mysteriously falls from the window of an upper floor in the school building. After being released from the hospital and returning to the school dormitory, his friend Matsuri announces that he has a new roommate, a very effeminate boy named Sunao who was their friend from childhood. The only problem is that Sora cannot remember him at all — which upsets Sunao and turns him rather cold to Sora.

Mystified as to why he cannot remember his past or why he fell from the building, Sora is determined to get answers, which turns out to be no easy task when things such as a sexually-harrassing math teacher or ghost possession get in the way. Then there is also the matter of Sunao acting very strangely from time to time…

“The Phantom Thief Jade will be paying a visit this evening!”

After having magic powers suddenly awaken in him, Makoto is enrolled into the Magic Department at Hakuou Academy. He soon learns of a rumour stating that his cousin Yuki will be the target for an elusive thief whose creed is, “there is nothing that cannot be stolen.”

While pursuing the mysterious phantom thief, Makoto becomes involved in solving various riddles in an effort to protect his precious cousin Yuki.

And so the true identity of the Phantom Thief is…?