The Whispering

So Joo-yeon

Eun-ha

Kim Min-gue

Min-woo

Choi Hee-jin

Jeong-yoon

Kim Tae-min

Dong-il

Kim Young

Woo-sung

Shin Jae-seung

Byeong-yoon

Park Jin

Hae-guk

Kang Se-jung

Mi-joo

Lee You-mi

Byun Ji-eun

Lee Han-seo

Chairman Choi's Daughter

Ji Dae-han

Man at the Internet Cafe

Jin Yong-uk

Homeroom Teacher

Seo Min-chae

Female Teacher

Lim Han-bin

Eun-Sung

Kyeong-hee Han

Eun-ha's mom

Seo Ki-wook

Student at the Internet Cafe 1

Kim Hyung-tae

Student at the Internet Cafe 2

Park Ji-yeon

Client at the Internet Cafe 2

Park Ji-hye

Client at the Internet Cafe 3

Park Su-kyeong

Client at the Internet Cafe 4

Sim Kyu

Police Officer 1

Kim Min-seong

Police Officer 2

Bae So Yeon

Escape Room Cafe Manager

Sim Mi-so

Escape Room Cafe Staff

Hwang Shin-hye

Classroom Ghost Cameo

Jeon Hyeon-soo

Ghost 1

Shin Ha-rang

Ghost 2

Kim Ga-ae

Ghost 3

Lee Sang-kang

Ghost 4

Kim Hyun-woo

Ghost 5

Su-hyeon Hong

Ghost 6

Yoo In-jae

Master

Byeon Se-in

Citizen 1

Seong Won-jeong

Citizen 2

Kim Yu-jin

Citizen 3

Kim Mi-hwa

Citizen 4

Heo Yeong-cheol

Citizen 5

Gwe Dok-ran

Citizen 6

Lim Min-sun

Citizen 7

Jeon Hyung-ju

Citizen 8

Joo Dong-wook

Citizen 9

Sang-sun Kim

Citizen 10

Kim Jeong-hwi

Citizen 11

Song Shi-yeol

Citizen 12

Lee Yeong-eun

Citizen 13

Choi Won-hyuk

Citizen 14

Hong Ji-eun

Citizen 15

Choi Mi-rae

Citizen 16

Kang Na-Young

Citizen 17

Nam Young-ran

Citizen 18

Hong Hyun-kyeong

Citizen 19

Yeo Eun-chae

Citizen 20

Cha Eun-woo

Citizen 21

Kim Jeong-sook

Citizen 22

Kim Jeong-sook

Student 1

Seo Kyoung-hoon

Student 2

Kong Jong-hyeon

Student 3

Min Seon-jae

Student 4

Kim Jin-young

Student 5

Lee Dong-gyu

Student 6

Hyo-jun Park

Student 7

Moon Jeong-bin

Student 8

Kim Hyo-won

Student 9

Kim Da-jin

Student 10

Lee Dong-hee

Student 11

Choi Seo-hyun

Student 12

Kim Soo-bin

Student 13

Yoon Ji-won

Student 14

Lee Yeon-woo

Student 15

Yoon Ji-in

Student 16

Lee Won-sang

Student 17

Lee A-ri

Student 18

Lee Ji-won

Student 19

Si-eun Kim

Student 20

Song Jeong-hyuk

Student 21

Shin Eun-jung

Student 22

Oh Hye-jin

Student 23

Kim Min-su

Student 24

Lee Jung-ah

Student 25

Yeon Seung-ju

Student 26

Oh Won-jun

Student 27

Han Dong-hoon

Student 28

Kim Yeong-Gyu

Student 29

Choi Jae-min

Student 30

Min Da-eun

Student 31

Kim Se-yeon

Student 32

Lee Pil-mo

Chairman Choi

Lee Young-ee

Special Appearance

Alyssa Soebandono

Miya

Dude Harlino

Hinata

Sayuri Matsumura

So-yeon

Rima Matsuda

Yoon-hee

Kurumi Shimizu

Jin-hee

Aki Asakura

Yeong-ju

Yuki Kashiwagi

Ju-yeon

Sakurako Okubo

Lia