An idea born from that horrible idea thread that shall not be named.
While out together as a family, a hollow is attracted to Ichigo and his family and attacks them.
Isshin barely manages to get his family out of the way in time and is severly injured by the hollow. Realizing he doesn't have much time left, he turns to the currently 11-12 year old Ichigo and performs a technique. He knows he can't access his powers, and he knows Ichigo can't access his own. So in a similar method to what Rukia does, he focuses all of his intent on Ichigo and transfers his control into Ichigo.
Ichigo makes quick work of the simple hollow after that. But his memory as a temporary Shinigami disappears and he is left with both parents dead. But realizing what he must do, Ichigo takes care of his sisters.
So this idea has basically two ways of going.
A serious path where Ichigo is taking care of his little sisters and thus has his personality changed (not completely mind you) over this.
Or a crack path, where we get Uber Brother Ichigo who is super protective and must be updated on his sister's whereabouts constantly. He is even so terrified of what will happen to his sisters, that he brings them with him to Soul Society so he can always take care of them even when fighting to save Rukia.
While out together as a family, a hollow is attracted to Ichigo and his family and attacks them.
Isshin barely manages to get his family out of the way in time and is severly injured by the hollow. Realizing he doesn't have much time left, he turns to the currently 11-12 year old Ichigo and performs a technique. He knows he can't access his powers, and he knows Ichigo can't access his own. So in a similar method to what Rukia does, he focuses all of his intent on Ichigo and transfers his control into Ichigo.
Ichigo makes quick work of the simple hollow after that. But his memory as a temporary Shinigami disappears and he is left with both parents dead. But realizing what he must do, Ichigo takes care of his sisters.
So this idea has basically two ways of going.
A serious path where Ichigo is taking care of his little sisters and thus has his personality changed (not completely mind you) over this.
Or a crack path, where we get Uber Brother Ichigo who is super protective and must be updated on his sister's whereabouts constantly. He is even so terrified of what will happen to his sisters, that he brings them with him to Soul Society so he can always take care of them even when fighting to save Rukia.