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This first arc does not reveal the cause of Keiichi's paranoia and eventual violence. It implies a possible supernatural influence on him as well influence from paranoia-induced hallucinations.
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At first the reader is shown the happy life of Maebara Keiichi who recently moved to the rural village Hinamizawa. This chapter mainly focuses on Keiichi's and his friends' happy days. Keiichi becomes a member of a club where his new friends Sonozaki Mion, Ryūgū Rena, Hōjō Satoko, and Furude Rika play games after school. However, Keiichi's happy days come to an end as he learns from the visiting nature photographer Tomitake Jirō that there was a bloody murder in Hinamizawa. Keiichi questions his friends about the incident but they unwaveringly deny it, elevating Keiichi's doubt in them.
Keiichi tries to ignore Hinamizawa's past and return to his peaceful life, but as the day of the Watanagashi Festival approaches he learns about Oyashiro-sama's curse from Tomitake's friend, Takano Miyo. On the day after the Festival, Keiichi learns from the local detective Ōishi Kuraudo that Tomitake was killed on the previous night. Keiichi agrees to cooperate with the detective in order to find out the truth.
Fearing his friends, Keiichi feigns sickness to skip school, and he learns from Ōishi that all of his friends are connected with the previous Festivals' victims. That evening, Mion and Rena visit Keiichi and give him some ohagi as both a get-well gift and Club assignment. To Keiichi's surprise, Rena and Mion know about his talk with Ōishi. To his shock, he later discovers that one of the ohagi they gave him contains a needle. On the next day, Keiichi takes the disappeared student Hōjō Satoshi's old baseball bat for self-defense. However, when Keiichi finds out that Satoshi did the same things a year ago and disappeared, his suspicion and fear start to turn into insanity.
As Keiichi's insanity grows, he becomes more and more violent toward his friends and believes the whole village is out to kill him. In the climax of Onikakushi-hen's final chapter, Keiichi's struggle to stay alive forces him to make a horrible decision.
The new adaptation is based on but departs from and adds to Oni kaku shi-hen: Onidamashi-hen
All deaths and disappearances are listed only as they are told in Oni kaku shi-hen. Spoilers are only for the individual arc, not the overall series.
The 2008 movie Higurashi no Na ku Koro ni (Shrill Cries of Summer) is based on Oni kaku shi-hen. In the movie Keiichi goes into the Saiguden with Takano and Tomitake as in Watanagashi-hen. This seems to be why Mion and Rena are trying to kill him.
It was later adapted in the 2016 TV show, over the course of two episodes.
See Tsumihoroboshi-hen{|width="100%" ''Please do not deplore yourself.
''Please do not deplore yourself.
''So please tell me. Frederica Bernkastel
Higurashi no Naku Koro ni Onikakushi-hen pt-br:Onikakushi-hen
