[izmosmolnar]

Originally Posted by Jimmy C

If that's the case, then I suppose

Spoiler:

He actually managed to cure the disease and did it in such a way that no one in the village knew anything about it. I kinda forgot this is the world where everything that could go right did go right.

Spoiler for about the possibility:

Yeah that might be explainable, but I don't think that's the case. In normal worlds the Tokyo group researched it more than 5 years (5 yearly oyashiro-sama's curse, plus the time between the Dam killing and the establishment of the clinic + old Dr. Takano's research aswell) and they still don't understand the illness fully. Irie mentioned to Shion at the end of Kai episodes, how little they still know about the syndrome, hence why Satoshi is unconscious. Fair enough, the Tokyo group's true secret intention is to gain a chemical weapon from that, but they were trying their very best to research an antidote (especially with the gentle pedo-Irie around)
But if they sacrificed so much funding and researched more than 5+ years with multiple personnel, I find it unlikely that there is a realistic chance that Dr. Takano alone (especially without the assistance of Lambade-, uh I mean nurse Takano) without proper fundings managed to treat all 3000+ residents and eliminate the cause of the illness itself and all these BEFORE the very first Dam murder...
Especially considering how the illness is a regional thing and people doesn't spread it themselves (otherwise even ex-Hinamizawa residents who moved somewhere else would spread it in entire different regions).

Originally Posted by Eryops

Spoiler:

Keiichi managed to bear the stress from being bullied without attacking small children with a BB gun. As a result he never had to leave and go to Hinamizawa.

Spoiler for That's sounds possible too:

but I hope that's not the case. My whole theory is based on that Frederika/future Rika interfered with nurse Takano's past and prevented her parents to die, so she remained a cute (?) little girl, without ever going evil. (And I believe it's still entirely possible. It's amazing how much a loli's acts can affect the whole future. No wonder they made her into a wit- ehm. going on! )

But that doesn't involve Keiichi in any way. It's very unlikely that after Frederika interacted with Miyo (think that's her name), she went all the way to somewhere else in Japan (not to mention she had to timetravel too!), so she could prevent K1 to harass little girls.
K1 was never infected with the syndrom (except in the higurashi arcs, but that's after moving there of course) so we cannot even explain it in such a way that, he had been infected with Hinamizawa syndrome which ultimately caused him to shoot little girls with BB guns, because he never even been to Hinamizawa before.
Well whatever. K1 is one of the most popular characters, I'm sure the show going to reveal the truth behind his absence at the later episodes (I just hope they not going to explain it with some kinda absurd reasoning)