>>5800856As for whether or not you were cursed? It seemed to be that you were more-or-less fine. The status of your soul was secure, you weren’t being brainwashed or replaced… Though that seemed to be a component of luck more than anything.
Your spiritual energy was slowly trickling into the afterlife.
Your dead sister’s spiritual energy was filling the gaps caused by that.
Your chakra was BLUE.
Your chakra was distinctly otherworldly in character.
The first two were the worrisome part, which the Third Hokage had gone through great lengths to mollify your concerns over it. Apparently the rate of exchange was slow enough, and your chakra natures compatible enough, that your own spirit had no real issues rewriting and incorporating her spiritual energy as your own, albeit with an obvious tinge of the hereafter in your aura. So you were safe from being influenced by it. It was debatable at which point ‘spiritual energy’ and ‘soul’ became synonymous anyway. Spending spiritual energy to activate a jutsu did not kill your soul, because that energy existed in excess and would replenish. What was happening between you and Izumi could most likely be seen with a similar eye, chakra in exchange for chakra, and not ego-death and replacement of your quintessential being. There were other abilities you had heard of that could ‘eat’ or ‘steal’ another person’s chakra, and that never rose to the level of eating souls either.
All things considered, it was probably an improvement over a normal person, not a detriment.
It occurs to you, belatedly, that the reason your chakra was overwhelmingly water-oriented was probably because her chakra nature was also water. Since there was a constant movement of water-related energy, it would make jutsu of other types inherently more difficult… Probably because your body was automatically and inherently in a state of expending and receiving water chakra, which would taint and hamper the use of other release types. That’s probably what Shigure-Sensei was trying to tell you.
As for a cure? Lord Hokage said there was no ‘cure’, but he did also imply that this state would naturally come to an end. Probably once there was no more interchange of chakra. You already had an idea of how that could be brought to a close… Slowly with time, or immediately with a near death experience and the widening of this mysterious channel.
Closing the channel would most likely be in your best interests, from a pragmatic standpoint. Whatever benefit you got from having ‘otherworldly blue’ chakra was likely to be permanent regardless, but with the closure of the channel you would also no longer be crippled in the use of non-water elemental releases.
Trying to widen the channel purposefully was tantamount to suicide on many levels though, and not worth-