I predict this scenario for the next arc and for aizen's reappearance
ichigio got his powers back and is fighting his way through the 8 hells to beat the new bad guy satan and save his sister karin who is to be executed and is being kept at the 8th level for her linage to their father who turns out to be someone other than isshin who was on par with the spirit king, and the people of hell by doing this are waging war against the spirit king, who came to except her as his own daughter, ichigo goes but get's his ass kicked at level 6 by the main warden Nallegam and put in prison, then chad disguises/fights his way to save ichigo, finds his cell and frees him and talks about friendship, he takes him to a place where a bunch of vasto lords attack them chads doing well but there's too many so ichigo knocks them out with a new mysterious power called ikah, they are then saved by mysterious new guy named Amuzni who brings them to their boss Via, Via operates on ichigo by pouring healing soulhormones into him, chad cheers him on the whole day until he gets better, Ichigo gets re-energized him and Via and Amuzni travel to level 8 but find out she's already gone, Iebnij a long time friend of Karins who was opposed to this war because the spirit king keeps order tells them they haven't been gone long, the exits get blocked and Amuzni saves them from the sleeping kido,
there's nowhere to go, then ichigo hears a voice "I could use a hax illusion to make them think we're not here, how about it ichigo?" Ichigo turns, "YOU!!!!!" aizen stands there, "I had lost all intrest in the spirtual world but now I hear the spirit king and his soul society are at war against Hell's demons, to think a day would come when I would get the chance to take his head, I have great interest in this war, with my power you and I could escape this place, Not a bad deal you agree both of us would stand to gain," Ichigo bursts out, "Like hell your the bastard who almost destroyed my home town and soul society" "all in the past, I no longer have any interest in that" aizen claims
via says he knows him and knows a great weakness he has and that he would be of use, so they let him free, and Iebnij says to let him fight that he would like to die an honorable death, and i think you get how the rest of the story will go
And later on in the war Hinamori gets magma-fisted and dies in Hitsugaya's arms.