Kyouya sighed and rubbed his eyes wearily, scanning the contents of the file titled Hitachiin.
The words Complete Recovery mocked him cheerfully, and he flipped through numerous pages of nurse reports and scans to a few sheets of immaculately handwritten notes, putting the rest aside.
Hikaru's mystery delusion had never been truly identified, having been "cured" before any need for exhaustive study had been necessary. Deeply unsatisfied with this gap in his knowledge, Kyouya flipped through his notes to a specific section, whose title was neatly bolded and underlined.
Capgras Delusion- a delusion usually found in conjunction to injury in the temporal lobe. Affected party holds the belief that one or more persons close to them have been replaced with an identical imposter. The delusion is believed to stem from an impairment of the subject's ability to summon the proper emotional response to a familiar face despite conscious recognition, hence the idea that said familiar person is an "imposter."
It had been one of his prime suspicions at the time, though the idea would have had to be twisted slightly to suit Hikaru's case. While most people sustaining such a delusion would have no other explanation for someone who looked right but felt like an imposter, Hikaru had Kaoru's Id persona, which logically, or as logically as a one could get with mental illness, would have looked identical to Kaoru but still not have seemed right.
But that's just silly. He has to remind himself. Occam was probably rolling in his grave. Freud too, if you took Kaoru's side of the equation into account.
He replaced the notes and snapped the file shut deftly, tucking it into the back of his filing cabinet where he'd hopefully never see it again.
Maybe he should call Tamaki.
If nothing else, his friend was good at being ridiculously distracting. (Even when he wasn't around apparently, considering the looks the he still got from the entirety of the female faculty at the hospital whenever he had business there.)
He glanced back at the file cabinet irritably.
Yes, he definitely needed the distraction.
-oOo-
AN: So there you have it. My BS explination for what exactly was going on with Hikaru's head in this fic. Don't worry, Kyouya think's it's silly too. I think it's silly too, but it was a fun plot bunny while it lasted. Also if you have any question's concerning what was going on with Kaoru's head... so do I, but leave me a review and I'll do the best I can to clarify. XD