-Remember how easy Souhaku died? and Mitsuomi actually thought he had done something important?
-What about Nagi's mother telling him that if he doesn't know why he's fighting for, he'd keep on channeling the Earth Dragon. Once he made a decision that he'd soar through the sky and become the Dragon of Heaven(hence the Tenjo Tenge title). Yet that was quickly forgotten once the imprisonment(by Souhaku) happened.
-What about Maya asking Nagi "Can you hand over your life to me?" What was the whole point about Maya going to Nagi's mother and asking permission to use Nagi's life to end the war? Looking back on how the manga ended, dont it make that whole sequence stupid?
-what about Aya using the Reiki to kill Souhaku inside Nagi? if the Reiki can kill red feathers why did they go back to Souhaku at the end of the manga?
-Why did Oh Great! even said that the moment Nagi joined the Jyuukenbuu that he'd be the strongest member to ever join the jyuukenbuu?
-What about Aya telling Nagi that one day he'd become stronger than anyone? whatever happened to that?
-Why make Nagi look like shin in the first place??
-whatever happened to all the red feathers that was supposed to be part of the tournament??
-What was up with "I need you to break me out the cycle" by Nagi to Masataka. Did Masataka break any cycle? he was getting his ass handed to him by mindless monster.
-Why make Nagi look like monster when Gaokishi looked human?
-WHy spend 10+ chapters focusing on Masataka character development and other useless subplots when it mounted to nothing in the end?
-whatever happened to masataka being jealous of Nagi because of aya? whatever happened to the foreshadowed confrontation over that situation?
-Why did Maya had to die for when The Reiki can kill red feathers?'
-Why did Maya hate Mitsuomi for anyways? Shouldn't she hate the father more? Wasn't the father the one using her brother as guinnea pig? Why did they spend the whole manga saying he killed Shin? heck why did they even say MItsuomi beat SHin when Shin nearly killed everybody that was at the fight?
And the list goes on.......
My feeling is that Oh great! stopped caring about the manga once the anime failed. The manga chapters used to be longer and was bi-weekly. But once the anime failed horribly....