[Klashikari]

Spoiler for PART A:

• Ooishi and Rika are in his car, and they of course talk about Tomitake and Takano's deaths. Ooishi asks if she can remember of any clue about the persons who planned the murders, but Rika isn't able to do so. Considering her involvement despite being the Priestess of the Furude Shrine, Ooishi gives her invaluable information: Ooishi explains the coroners determine Takan's corpse "time" as 24 hours prior the festival. however, as everyone can aknowledge, she was definitely alive during the Festival. Rika is completely dumbstruck.
  Ooishi wonders if this corpse happens to be a fake, that would mean Takano is alive, and lurking somewhere. Rika reacts immediately to this comment, asking if Takano is the culprit. Ooishi comments about Oyashiro-sama's curse.

• At the clinic, Irie is desperate and doesn't understand why Tomitake and Takano were killed. Rika doesn't know and tells him that ooishi doesn't have a clue. She asks to Okonogi if he doesn't know anything.
  Of course, Okonogi doesn't know, and reports some facts. It appears Irie might be suspected, but the later adamently ask what he would gain doing this. Okonogi tells Rika to not worry about it, as they will stick on their duty.

• Rika and Hanyuu are sitting, Hanyuu says they couldn't prevent it after all. Then Rika says it is different now. She doesn't know if Takano is really the culprit. Hanyuu can't confirm, but Rika says she won't give up, ever.

• Rika won't go school, and Satoko wonders if it is her fault. Rika assures her she has a fever, and she will be okay soon. Rika discuss a bit with Hanyuu. Hanyuu says if she dies, they can quickly go on another hinamizawa. Rika wonders if she saw something special in the "next" hinamizawa. Hanyuu argues she doesn't, but she says it is sorrowful to see Rika's hopes getting betrayed like this. She then receives a phone call from Okonogi.
  Okonogi tells her Irie is the culprit. (kuromaku?)
  As Okonogi explains the facts, Rika is shocked, but doesn't understand, and doesn't believe Irie is "kuromaku"

• Rika calls Ooishi and tells him she is in danger and it might be the people who are after her.
  Rika doesn't know whoever between irie or okonogi she has to trust. As Rika is still talking about her hypotheses and thoughts to hanyuu, she is interrupted by...

• Satoko and everyone else. It appears she brought everyone, as she senses something is wrong, and they heard what Rika said. They are puzzled what she said about being killed, and ask firmly what is the problem.
  Rika then asks Keiichi if he still believe he can beat fate. Keiichi answers affirmatively. Rika wonders if she should tell them, but Mion and Satoko disapprove what she is saying. Rika understands and will explain them what happens in Hinamizawa and what is happening with her life...

• Rika begins to explain the Hinamizawa syndrome, a peculiar disease which is exclusive to this area. The subject can't discern who is his enemies or allies, then in the end, they die by clawing out their throat.
  She explains a huge stress is a trigger to the madness.
  She then explains Oyashiro-sama's curse.
  Keiichi wonders how such disease can be like this, then she explains it is a biological weapon, and reveal the truth behind the Irie institute.
  Meanwhile, Irie begins to explains his point of view to Okonogi, explaining he was thankful to Takano, etc.

Spoiler for PART B:

• Rika and everyone else are in her house, and she begins to explain the facts. In fact, the syndrome was done by some research for a bioweapon. This was of course under complete secret.
  Irie was working on it, while the Yamainu was dispatched to assure the secret won't be exposed.
  Rika understands they won't believe her but...
  However, Keiichi downright says he believes her. He admits it is hard to believe it, but since it is Rika, he will do so. Rena soon says the same, and remembers something wrong with her during the school incident. Satoko begins to link it with Irie, and panicks when she is remembering the day when she saw her parents falling from the cliff. Rika quickly approaches her and pats her, saying it is okay, while Satoko is crying. She tells her she doesn't have to remember, and someday the time will come, but it isn't necessary now.

• Rika begins to explain the worst thing of the disease is... herself.
  She explains that she is the main carrier, as a descendant of the furude. She creates pheromones which ease the people of Hinamizawa. It is probably the reason why they treasure her. Keiichi says everyone should be infected and asks what would happen if she dies. Rika explains the legends of Onigafuchi will be realized, and everyone will turn into a demon, killing each other.
  Rika doesn't know for what purpose the culprit does that.

• Irie and Okonogi chat, and Irie hopes the culprit will be caught. A soldier enters and reports something to okonogi.
  Irie wonders what's happening, then Okonogi tells him they found Takano. Then they will resume the plan.

• Back with Rika and everyone else, they all deduce Takano is the culprit. As they are talking a bit happily, Rika is puzzled and surprised, as they believe her without any problem etc. Keiichi comforts her that they are friends/comrades and if they don't trust each other, it is the end.
  While everyone are keep going in their chat, Rika is preparing some drink and talks with Hanyuu.
  Rika receives a phone call from Ooishi, who will come soon. Rika is relieved and tell him to come quickly, as she has something to tell him.

• Ooishi and Kuma are on their way, but stop as they see a man lockpicking something, and they are suspicious. Both are leaving the car. Meanwhile one of the yamainu men is talking with another one via radio. Ooishi arrives and wants some explanation about this late work. He doesn't buy the yamainu guy explanation, but then...
  Ooishi is shot in the head by a sniper... Kuma has barely the time to realize it as he is soon shot in the head as well.
  They are the first to fall...

Puzzles pieces are sitching each other... for the horror.
Many truths lie in this episode, and it is well done.
The last scene of this episode was desperate, as i believe many people would say "don't go there!" until they see something to familiar...