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This article is about a character in Higurashi When They Cry.

Kihiro Ryuugu (竜宮 希比呂 Ryūgū Kihiro) is one of the main protagonists of Higurashi no Naku Koro ni Rei. He is Rena Ryuugu's son.


Rena's son. He is in the same class as Keitarou, and they are especially close.

(Translated from the Hoshiwatashi website).


Kihiro has short orange hair and light blue eyes. He wears a white button-up shirt and black pants.


A young Kihiro and his mother

Kihiro is the son of Rena Ryuugu and an unnamed man. Rena moved out of Hinamizawa when she got married, but got divorced and moved back to the village with Kihiro. Kihiro grew up with Keitarou as his best friend and now attends the Okinomiya middle school with his friends, forming a games club.


Kihiro is sharp and intuitive. He has a habit of yelling that things are lies whenever he's pranked or tricked, but it usually takes him some time to register them. Kihiro will not hesitate to hit his friends if they do stupid things, inheriting his mother's extreme punches.

Kihiro tends to get flustered when around Keitarou and seems to refer to him with a cutesy nickname, calling him "Keitarou" in katakana (ケータロ).


Role in the Story

Higurashi no Naku Koro ni Rei


Oniokoshi ch1 kihiro punches sakiko.png

Kihiro is introduced walking to his usual meetup spot with his friends when a hiding Keitarou surprises him from behind. They join Tamaki and Sakiko, and when Tamaki suddenly gropes Keitarou because of Sakiko's prompting, Kihiro punches Sakiko as punishment. The group then heads to school. After school, Kihiro notices that Keitarou and Kururu have developed a new friendship.(Oniokoshi Chapter 1)

While the group heads home, Keitarou tells them about how he met a strange girl who wouldn't talk to him at all. Kihiro and the others tell him about Polaris, and how they're a cult that doesn't speak to outsiders. The group then goes to Smile Shop for dessert. Kihiro and Keitarou eat outside, where Kihiro expresses concern that Keitarou trying to get involved with Polaris would be bad. A photographer named Marutake then appears, a regular customer to Smile Shop. Marutake brings up Oyashiro-sama's curse, which seemed to resurface a year ago, but Kihiro says it's just a coincidence since the incident happened on Watanagashi last year. Marutake then brings up other incidents involving Polaris.(Oniokoshi Chapter 2)

Kihiro helps scare away the delinquents with his cold analysis

The club heads to Angel Mort the next day, where Keitarou declares he's going to become friends with Polaris and needs suggestions. The club focuses on eating instead. Later, they see some delinquents harassing a girl outside the restaurant. Keitarou tries to help her but gets knocked aside, and as Kihiro helps him up, he deduces that the delinquent leader is lying about being a livestreamer just to pick up girls. The delinquents get scared away.

The group sees that the girl being harassed was Inori, the strange girl Keitarou met earlier. Inori thanks them for their help and runs away, and then Kururu shows up. Keitarou introduces Kururu to everyone, and she quickly becomes friends with the club.(Oniokoshi Chapter 3)


Keitarou scares kihiro.png

Kihiro waits for Keitarou at their usual spot and then join Tamaki and Sakiko. When Tamaki suddenly gropes Keitarou because of Sakiko, Kihiro punches Sakiko in the face as punishment.

After school, Kihiro watches as Keitarou makes a new friendship with Kururu. The group reunites, and Kihiro's tone turns serious as he tells Keitarou that they need to talk about the children in Hinamizawa.(Hoshiwatashi Chapter 1) The club explains that the village changed because of Polaris appearing.

Keitarou and Kihiro talk

The club goes to Smile Shop the next day. Keitarou and Kihiro eat and talk outside, where Kihiro mentions that Oyashiro-sama's curse seemed to resurface last year, and that the one who disappeared was a Polaris member. Kihiro tells Keitarou to stay away from Polaris, but he shows confusion as to why everyone dislikes them. Sakiko suddenly appears and explains why.(Hoshiwatashi Chapter 2)

Keitarou is still determined to befriend Polaris, and at school he tells his friends about a plan to give members questionairres. They then meet Kururu and learn she's a Polaris member, but become friends when she proves very talkative.(Hoshiwatashi Chapter 3)


  • Kihiro's surname was left unknown during the initial announcement of Higurashi Rei.
  • Natsumi Kei's design for Kihiro was inspired by pictures of a young Björn Andrésen.[1]