Episode 927: The Scarlet School Trip (Bright Red Arc)
Scenario: Haibara decides to give Conan the APTX 4869 antidote for his school trip under the conditions that he wait 8 hours between doses, have a plan so people don't notice him changing back into Conan, and to not stand out as Kudo Shinichi. On the trip, Shinichi runs into Kurachi Keiko, an actress who knows his mother, and she invites him to help her solve a cipher. Shinichi and the others meet the film crew who are there with Kurachi working on a film about a tengu - the actor Ihaya Shinya, the director Mayama Mineto, and the composer Agata Riki. The scriptwriter, Nishiki, got the cipher in the mail and they find out the cipher's creator, Dekuri, committed suicide recently. Shinichi and the others leave to work on the cipher while the film crew goes to dinner, but Shinichi soon receives a text from Kurachi and they come back to find Nishiki murdered in his room alone with another cipher that the murderer left. While beginning to investigate, Shinichi feels the medicine wearing off and returns to his room. It's revealed that Shinichi asked Hattori to help him by switching places with him at night while in bed. Because of Shinichi's classmates' teasing, Hattori uses the bow tie voice changer and says Shinichi and Ran kissed in London. Everyone runs to Agata's room to find a tengu on his ceiling that vanishes when he throws an ashtray at it. Later, Shinichi and the others bump into Momoji, whom they previously met in Kyoko, when meeting the film crew for lunch. Everyone, except the film crew, is drawn outside when several people in tengu masks run around the street. When they return, they find Ihaya dead just outside the restaurant with another cipher.
Shinichi eventually manages to take part to the Kyoto trip with Ran and their friends, thanks to the series of antidotes Haibara gave Conan. Each time Conan takes an antidote, he has to wait 8 hours after the back shrinking before taking another one. Shinichi and Ran secretly hope that Ran will give an answer to Shinichi's love declaration back in London. On the Kiyomizu-Dera, Shinichi meets Keiko, an actress and old friend of his mother, who stays in the same hotel as Shinichi and his class, with some university friends with which she shot a blockbuster revolving around a tengu and other monsters. She asks Shinichi to help her to decipher a mysterious code written and sent by their late friend Michio Dekuri, who committed suicide some time ago. The code was received by Nishiki, the movie's screenwriter, along with red aralia leaves, typical from Kyoto. Shinichi tries to solve it, while enjoying Kyoto with his friends, in particular Masumi, who knows Conan is Shinichi but still keeps it a secret. The group of friends visit Kyoto's temples and their gruesome crimson ceilings, that were at first the temple's floors spilled with the blood of samurais who committed mass suicide/seppuku and left many footprints, it was so astounding that the floors were kept and turned into ceilings.
After Nishiki meets with the others to show the riddle, he dies less than an hour later and is seen stabbed dead on the floor. Around him are scattered sheets of the screenplay, labels and a new riddle. On his forehead have been made two bumps and on the ceiling was a blood pond (in fact red paint painted beforehand except for a few droplets of real blood) and footsteps leading to the exterior of the room as if it was a tengu's doing.
Just and hour after Nishiki's murder, Agata is seen screaming in his room which alerts everyone. They gather at the door and get it unlocked by the bellhop before seeing inside Agata on the floor with two bumps on his head and screaming for help at a tengu on the ceiling. He then throws his ashtray at it before it explodes and vanished. The next day, Agata slowly recovered from the injury and there wasn't any new riddle.
After a hord of people disguised as tengus disturb the group (Shinichi, Nakamichi, Ran, Sonoko, Momiji and Masumi), they fight them before finding out that someone on a website was paying them 100 thousand Yen. As they feared it was the culprit's actions to distract them, they head back to the restaurant and find out it was too late: Ihaya was dead, lying upside-down on the Inuyarai where there were the same footprints as in Nishiki's room.
