The Glassy Water's Surface

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Chronology
‹ It's a Ghost!	List of Episodes	The Hero of Ishinomaki ›

Episode 1174-1175 (Int. Episode 1232-1233)
Information
Title:	The Glassy Water's Surface
Japanese title:	ガラスの水面 (Garasu no Minamo)
Original airdate:	September 6, 2025 (Part 1) September 13, 2025 (Part 2)
Filler case:	#446
Season:	30
Manga source:	TV Original
Case
Cast:	Conan Edogawa Kogoro Mouri Ran Mouri Hiroki Oi Fumimaro Ayanokoji Maro
Case solved by:	Kogoro Mouri (via Conan)
Next Conan's Hint:	Boathouse (Part 1) Noctiluca (Part 2)
Staff
Director:	Yasuichiro Yamamoto Nobuharu Kamanaka
Screenplay:	Akatsuki Yamatoya
Storyboard:	Masaki Ozora
Episode director:	1174: Masahiko Suzuki 1175: Yoshihiro Sugai
Animation director:	1174: Masahiro Sekiguchi Maho Tanabe Tomoyuki Kameda Akihiro Ino Tomoyuki Oshita Shinichi Wada Hideaki Shimada Honoka Kikuchi 1175: Kosei Takahashi Eiichi Tokura Ga-Ryeon Park
Character design:	Masatomo Sudo Rei Masunaga (sub-character) Hiroshi Ogawa (design works)
Production cooperation:	1174: 8bit 1175: Mouse
Voice Cast: Minami Takayama as Conan Edogawa Rikiya Koyama as Kogoro Mouri Wakana Yamazaki as Ran Mouri Kenji Nomura as Hiroki Oi Ryotaro Okiayu as Fumimaro Ayanokoji Jin Urayama as Akihide Kamikawa Fujiko Takimoto as Miku Nishino Ayumi Tsunematsu as Hitomi Togashi Ryota Iwasaki as Hironobu Matsuyama Katsunori Okai as Kanta Tsuji
Music
Opening song:	Poker Face
Closing song:	Fun! Fun! Fun!

The Glassy Water's Surface (ガラスの水面 ,Garasu no Minamo) is the 1174th and 1175th episode of the Detective Conan anime. Taking place in northern Kyoto Prefecture, the story follows Conan, Ran and Kogoro visiting a client that lives in a boathouse in a small port town, at the request of lawyer Hiroki Oi. A mysterious disappearance has taken place, seemingly related to the legend of Urashima Tarō.

Cast

Characters

Conan Edogawa

Kogoro Mouri

Ran Mouri

Hiroki Oi

Fumimaro Ayanokoji

Maro

Gadgets

Gadgets

Stun-Gun Wristwatch

Voice-Changing Bowtie

Anywhere Ball Dispensing Belt

Case

Situation

Part 1

Lawyer Hiroki Oi receives a request from his client Kanta Tsuji to investigate the mysterious death of Takeshi Yamaoka that was said to be caused by the curse of Urashima Taro two weeks ago and now he entrusts the case to the Mouri family.

On the train to Kyoto prefecture where the client is at, the Mouri family is discussing the plot of the Urashima Taro's fairytale: Urashima Taro is a character who was brought down to the Dragon King's palace by the sea turtle he rescued earlier to be the main guest of the gratitude party. However, when he returns to the village, several centuries have passed, and all of his friends and family have died.

But one question remains for Ran’s perception: What is the curse of Urashima Taro?

Murder (past)

Location: Ine Bay between Ineura Port and Aoshima Island

Victim: Takeshi Yamaoka

Age: 25 years old

Time: 2 weeks ago

Cause of death: Neurotoxin poisoning

Suspects: Kanta Tsuji, Hironobu Matsuyama, Miku Nishino, Akihide Kamikawa and Hitomi Togashi

Upon arriving, they begin to hear Tsuji's account of the events two weeks ago: While searching for his missing friend Takeshi Yamaoka with a fisherman named Hironobu Matsuyama; and the head priest of the Urasawa Shrine, Akihide Kamikawa, the three heard a seemingly familiar melody related to the curse of Urashima Taro, and then they discovered Yamaoka's body on a boat with his hair seemingly turned white due to the curse.

Robbery (past)

Location: Urasawa Shrine, Ine Town

Victim: Akihide Kamikawa

Age: 53 years old

Time: 3 days before Takeshi's murder

Stolen items: Relics from the shrine consisting of a turtle shell and two treasure boxes

Suspects: Takeshi Yamaoka, Kanta Tsuji, Hironobu Matsuyama, Miku Nishino, Akihide Kamikawa and Hitomi Togashi

Missing person (past)

Location: Ine Bay

Victim: Kazuo Yamaoka

Time: 4 years ago

Cause of death: Missing at sea

Suspects: Miku Nishino

Murder

Location: Ineura Port

Victim: Hitomi Togashi

Age: 24 years old

Time: Three hours ago

Cause of death: Blunt force trauma

Suspects: Kanta Tsuji, Hironobu Matsuyama, Miku Nishino and Akihide Kamikawa

People

Kanta Tsuji
	25 years old "Yamatoya" boathouse owner

Takeshi Yamaoka
	Victim (poison) 25 years old Fisherman

Hironobu Matsuyama
	28 years old Fisherman

Miku Nishino
	26 years old Ryokan "Akatsuki" owner Kazuo's ex-wife

Akihide Kamikawa
	53 years old Urasawa shrine head priest

Hitomi Togashi
	Victim (drowned?) 24 years old "Isago-T" café manager Takeshi's ex-girlfiend

Kazuo Yamaoka
	Deceased? Missing at sea since four years ago Takeshi's older bother Miku's ex-husband

Resolution

  Show spoilers »

Conan calls Ayanokoji pretending to be Kogoro and arranges for all the suspects to gather at Ryokan Akatsuki. When everyone gathers, Kogoro says he did not call them over, but Conan knocks him unconscious with his wristwatch. The deduction starts, with Kogoro explaining that Takeshi Yamaoka's death was a suicide. He could not grieve his brother's disappearance and decided to frame Miku Nishino with his own suicide, since he believed she killed Kazuo. He stole the relics from Urasawa-jinja and went by boat to the island across the harbor to start his plan. He built a cabin there where he prepared a boat and dying ingredients. Following that, he died his own hair white and wore the turtle shell and put the larger relic box on the boat. Before that, he snuck into Nishino's house and put the small relic box in her room along with the poisonous frog from which he extracted poison. Before his death, he climbed into the boat and took the poison extracted from the frog and let the currents carry his body over to the shore. Now, this disproves Nishino's guilt in Takeshi's death, but she is not completely innocent.

Indeed, Miku Nishino is the culprit behind Kazuo Yamaoka's disappearance four years ago. The clues that pointed to her guilt were how she quickly accepted his death and how she built the lavish Akatsuki Ryokan using his life insurance. She built the hotel despite restrictive building laws and mostly was able to do so by inheriting fisherman Kazuo's boathouse, thus hinting that she only married him for the land the house stood on. She also killed Hitomi Togashi before she could reveal that she saw Nishino speaking to her dead husband, which is evidenced by Togashi's distinctive chocolate syrup which can be found under Nishino's shoes. After she was first knocked unconscious by Nishino, Togashi most likely grabbed the heel of Nishino's shoes to leave evidence, after which she was beaten to death. Without acknowledging killing Togashi, Nishino says that there is no evidence that she has Kazuo's dead body, but Kogoro refutes that, pointing at her hotel's peculiar structure. The roman baths have unusually thick walls despite the hotel being not that big, and a statue is placed in the wall with a sign "do not touch", hinting that she hid the body there. He asks her to surrender since they have evidence she killed the two, but Nishino decides otherwise.

Grabbing a vase from the conference room they are in, she smashes a window and escapes through it. Ayanokoji says that she cannot go far since it's on the first floor, but she surprisingly manages to escape on a boat in the bay. They realise that the thick walls and ceilings of the roman baths also hid a boat, which she remotely deployed and used to escape. Matsuyama offers his help chasing after the culprit and Ayanokoji, Ran and Conan hop onto his boat with him and chase after her. They try to get to her before the marine police who Ayanokoji has already contacted. Matsuyama says she cannot go far in that small boat, and Conan realizes her true intention when she escaped.

Attempted suicide

Location: Ine Bay between Ineura Port and Aoshima Island

Victim: Miku Nishino

Age: 26 years old

Modus operandi: Drowning

When she arrives further in the bay and sees Matsuyama's boat closing in on her, she picks up the anchor of her own boat and leaps into the water with it. Conan jumps right after her and manages to get a hold of her, but both are now sinking. He decides to use his belt to launch a massive inflatable football to push both of them to the surface. An unconscious Nishino is later arrested.

Aftermath

At the end of the case, Conan discusses with lawyer Oi about the case's conclusion and hands the lawyer a box of Kyoto Yatsuhashi. Both wonder why this snack has been associated with Kyoto as they drive away in the city.

Trivia

• This is the first case to take place in Kyoto Prefecture (outside of Kyoto City).
• The names of Tsuji's Ryokan and Nishino's lavish hotel-style Ryokan are taken from screenwriter Akatsuki Yamatoya's own name.
• The main inspiration for the setting location is the small town of Ine, in Yosa District, Kyoto Prefecture. The boathouses shown are the world-famous "funaya" (舟屋) from the Ineura area. Other features incorporated into the episode are the streetscape of Ineura and Ine Bay.
  • This is proven when when Nishino says that the town has less than 2,000 inhabitants and that it has no railway connection. This is indeed true in the case of Ine Town, although its population has fallen to around 1,800 inhabitants in its 2025 estimate.
  • The Urasawa Shrine (浦沢神社) is the real-life Urashima-jinja (浦嶋神社) in Ine's Honjōhama area, known for its relation to the legend of Urashima Tarō. Are shown in the episode the shrine's gate, worship hall and the Urashima Myōjin Hanging Scroll (浦嶋明神縁起絵巻), as well as the treasure box found on Takeshi Yamaoka's body, which is a real-life artifact. The name in the case is taken from Yoshio Urasawa, another screenwriter for the Detective Conan anime-original episodes and Yamatoya's mentor.
  • The uninhabited island in the bay corresponds to the real-life Aoshima Island.
• The song heard before finding the victims' bodies is children's song "Urashima Tarō".
• Kogoro's shiny business cards reappear in part 1.
• The architect Pierre Lemaître's name comes from French jockey Aurélien Lemaitre and possibly from French jockey Pierre-Charles Boudot.

Gallery

In other languages

Language	Title	Translation
Arabic	اسطورة اوراشيما تارو	The Legend of Orashima Taro
French (Subbed)	L'Eau à la surface vitreuse	Water with a glassy surface
Thai	ผิวน้ำกระจกแก้ว	The Glassy Water Surface

See also

• Season 30