Re-cap

Itsuki Uchiha is a member of The Order, a vast organization that maintains balance in the endless connective pathways to each worlds know as The Mobius Strip that is the highway of the multi-verse. Itsuki was mysteriously abandoned in a world unlike any other he has seen before and must locate a secret pathway to reunite with his allied himself with the worlds most superior country, The Fire Nation, and journeyed with it's royal Prince, Zuko for a long period of time. He hoped that by capturing its greatest threat, the Avatar, the Fire Nation would aid in his efforts to finding a way home.

However, during a mission in capturing the Avatar, Itsuki nearly died from a fatal fall that would have costed him his life had it not been for his newly unlocked power, The Chaos Force. A power that he had discovered he had his whole life that was a curse on his life, but in it lied great power. He spent the next several weeks using the Fire Nations fire bending teachings and applied it to using his chaos force abilities. But behind the scenes from both his allies and enemies he attempted to use other bending techniques to his arsenal during that period.

But one day after acquiring the Avatar, he set sail back to the Fire Nation homeland. However, during an escape attempt brought about Itsuki's unstable rage and growing mental instability. Prince Zuko then used his rivalry with a fellow Fire Navy admiral, Zhao to attack and let the Avatar escape using the chaos around the area to dispose of Itsuki.

Prince Zuko reluctantly abandoned his ally in the ocean to die during the skirmish. But Itsuki was saved by Admiral Zhao who offered his partnership in exchange for revenge. Itsuki accepted and was ally to Zhao for the remainder of his temporary service to the Fire Nation.
But after realizing that Prince Zuko was responsible for freeing the Avatar twice before, Zhao and Itsuki planned to assassinate the young Prince but ultimately failed. Zhao and Itsuki then launched a massive invasion to The Northern Water Tribe to capture the Avatar.

During the invasion Itsuki realized of Zuko's survival and followed him in his attempt to capturing the Avatar before Zhao. While Itsuki followed Zuko he watched as he took the Avatar away and awaited for the inevitability that he would be rescued by the Avatar's allies. But unknown to Itsuki Zhao had planned to bring the world out of balance by destroying the moon spirits. Itsuki pleaded along with the Avatar to stop his plan but it failed. During a vicious fight between Zhao, Itsuki and later Prince Zuko the moon was later revived by the Avatar an company.

Seeing how far he had fallen in his quest to return to The Order, Itsuki left the Fire Nation and Prince Zuko, but contained no more ill-will on their past actions against one another. Thus Itsuki left to go on his own way to try and return to The Mobius Strip while trying to keep what's left of himself in tact.
And now finally Book 2...