Ep. 13: The eighth and final chapter of the Massacre arc concludes with Rika's tragic sacrifice.
Aired on September 28, 2007

13
After Rika and Satoko escape their home, the Yamainu corner them in the forest. Mion, Shion, Rena, and Keiichi rescue the pair, but Takano ambushes the group. Takano and the Yamainu systematically shoot and kill each member, leaving Rika last. Rika requests execution without anesthesia to memorize the culprit's identity and break the cycle of death. She is killed and gutted. The spirits of the deceased and Hanyuu agree that Hanyuu must also break the cycle. Meanwhile, villagers are gassed to death at the school while Takano celebrates her ascension to godhood.
Episodes
- Ep. 9 · Massacre Chapter Four: Negotiation
- Ep. 10 · Keiichi Confronts Village Elders and Sonozaki Leader in Massacre Chapter Five Showdown
- Ep. 11 · Massacre Chapter Six: Strong Will
- Ep. 12 · Chapter Seven reveals Hinamizawa Syndrome truths as Rika shares her connection with friends while enemies eliminate opposition.
- Ep. 13 · The eighth and final chapter of the Massacre arc concludes with Rika's tragic sacrifice.
- Ep. 14 · Takano's Disjointed Flashbacks Reveal Harsh Childhood and Hinamizawa Syndrome Research
- Ep. 15 · Takano's Past and Heated Shrine Confrontation with Hanyuu
- Ep. 16 · Festival Music Chapter Three: The Beginning of the End
- Ep. 17 · Chapter Four of Festival Music details a strategic plan involving Rika's sacrifice.