So Joo-yeon as Eun-ha

Kim Min-gue as Min-woo

Choi Hee-jin as Jeong-yoon

Kim Tae-min as Dong-il

Kim Young as Woo-sung

Shin Jae-seung as Byeong-yoon

Park Jin as Hae-guk

Kang Se-jung as Mi-joo

Lee You-mi as Byun Ji-eun

Lee Han-seo as Chairman Choi's Daughter

Ji Dae-han as Man at the Internet Cafe

Jin Yong-uk as Homeroom Teacher

Seo Min-chae as Female Teacher

Lim Han-bin as Eun-Sung

Kyeong-hee Han as Eun-ha's mom

Seo Ki-wook as Student at the Internet Cafe 1

Kim Hyung-tae as Student at the Internet Cafe 2

Kim Young-hoon as Client at the Internet Cafe 1

Park Ji-yeon as Client at the Internet Cafe 2

Park Ji-hye as Client at the Internet Cafe 3

Park Su-kyeong as Client at the Internet Cafe 4

Sim Kyu as Police Officer 1

Kim Min-seong as Police Officer 2

Bae So Yeon as Escape Room Cafe Manager

Sim Mi-so as Escape Room Cafe Staff

Hwang Shin-hye as Classroom Ghost Cameo

Jeon Hyeon-soo as Ghost 1

Shin Ha-rang as Ghost 2

Kim Ga-ae as Ghost 3

Lee Sang-kang as Ghost 4

Kim Hyun-woo as Ghost 5

Su-hyeon Hong as Ghost 6

Yoo In-jae as Master

Byeon Se-in as Citizen 1

Seong Won-jeong as Citizen 2

Kim Yu-jin as Citizen 3

Kim Mi-hwa as Citizen 4

Heo Yeong-cheol as Citizen 5

Gwe Dok-ran as Citizen 6

Lim Min-sun as Citizen 7

Jeon Hyung-ju as Citizen 8

Joo Dong-wook as Citizen 9

Sang-sun Kim as Citizen 10

Kim Jeong-hwi as Citizen 11

Song Shi-yeol as Citizen 12

Lee Yeong-eun as Citizen 13

Choi Won-hyuk as Citizen 14

Hong Ji-eun as Citizen 15

Choi Mi-rae as Citizen 16

Kang Na-Young as Citizen 17

Nam Young-ran as Citizen 18

Hong Hyun-kyeong as Citizen 19

Yeo Eun-chae as Citizen 20

Cha Eun-woo as Citizen 21

Kim Jeong-sook as Citizen 22

Kim Jeong-sook as Student 1

Seo Kyoung-hoon as Student 2

Kong Jong-hyeon as Student 3

Min Seon-jae as Student 4

Kim Jin-young as Student 5

Lee Dong-gyu as Student 6

Hyo-jun Park as Student 7

Moon Jeong-bin as Student 8

Kim Hyo-won as Student 9

Kim Da-jin as Student 10

Lee Dong-hee as Student 11

Choi Seo-hyun as Student 12

Kim Soo-bin as Student 13

Yoon Ji-won as Student 14

Lee Yeon-woo as Student 15

Yoon Ji-in as Student 16

Lee Won-sang as Student 17

Lee A-ri as Student 18

Lee Ji-won as Student 19

Si-eun Kim as Student 20

Song Jeong-hyuk as Student 21

Shin Eun-jung as Student 22

Oh Hye-jin as Student 23

Kim Min-su as Student 24

Lee Jung-ah as Student 25

Yeon Seung-ju as Student 26

Oh Won-jun as Student 27

Han Dong-hoon as Student 28

Kim Yeong-Gyu as Student 29

Choi Jae-min as Student 30

Min Da-eun as Student 31

Kim Se-yeon as Student 32

Lee Pil-mo as Chairman Choi

Lee Young-ee as Special Appearance

Alyssa Soebandono as Miya

Dude Harlino as Hinata

Sayuri Matsumura as So-yeon

Rima Matsuda as Yoon-hee

Kurumi Shimizu as Jin-hee

Aki Asakura as Yeong-ju

Yuki Kashiwagi as Ju-yeon

Sakurako Okubo as Lia