Yoon I-sak

* Human
* Zombie

**Yoon I-sak** was a supporting character in Netflix's *All of Us Are Dead*. She is portrayed by Kim Ju-a.

## History

### Pre-Apocalypse

I-sak was the classmate and best female friend of Nam On-jo. She also knows Lee Cheong-san and Han Gyeong-su, as they meet up to go to Cheong-san Chicken after school for dinner. The next day, On-jo asks I-sak for advice on something, but doesn't reveal what despite her prodding. She doesn't hand in her phone, but is forced to when Park Sun-hwa texts the class group chat. During lunch On-jo tells I-sak that she told Lee Su-hyeok that she likes him. She screams happily, getting noticed by the other students and almost revealing On-jo's secret.

### Post-Apocalypse

During the outbreak I-sak was in the cafeteria and was lucky enough to escape the carnage before hiding in Class 2-5 with her classmates where she reunited with On-jo being happy that her best friend survived, and waited as On-jo calls for help but fails. Kang Jin-gu enters the classroom, but when the group realizes he is infected, they demand for him to leave, which he refuses to do. Unfortunately one of the students, Kim Min-ji is bitten and transforms into a zombie. They run into the science classroom, where they fight against zombies with the doors and windows.

### Death

When trying to get into the science room, I-sak is bitten on the leg but doesn't notice. After getting in the room, I-sak comforts On-jo about Su-hyeok being separated from them, then On-jo feels that I-sak's hand is cold. Her nose bleeds and panics when she realizes she is bitten, her eyes redden and cries to On-jo, they hug before I-sak transforms into a zombie. She attempts to attack On-jo, but Cheong-san pushes her and she falls out of the window, still hanging on the edge. As On-jo mourns for her best friend, Cheong-san pushes her to the ground with a stool to save On-jo from being bitten. On-jo cries as she loses her best friend after seeing her fall.

I-sak is never seen again, but she was presumably incinerated in the bombing along with all the other zombies.

#### Legacy

Her name was seen on a memorialized message written by On-jo alongside with others such as Cheong-san and Choi Nam-ra. It was translated as "I-sak, i miss you".

## Physical Appearance

I-sak had dark brown hair done up in a bun. During the rush after leaving the classroom, her bun comes loose and unfurls into a high ponytail. In On-jo's flashbacks, she's seen with her hair down and in a French braid. She wore the standard Hyosan High School female uniform with pale pink sneakers. On the day of the apocalypse she wore sweatpants under her skirt. In On-jo's flashbacks, she's seen wearing the Hyosan High School female summer uniform.

## Personality

Due to her low screen time, little is known about I-sak's personality except that she was cheerful and supportive, always supporting On-jo. When she realized she was infected, she went into denial and told the others she wasn't bitten despite her showing signs of being a zombie.

## Relationships

	+ Nam On-jo - Best Friend
	+ Lee Cheong-san - Friend
	+ Han Gyeong-su † - Friend
	+ Lee Su-hyeok - Fellow classmate
	+ Choi Nam-ra - Fellow classmate
	+ Seo Hyo-ryung - Fellow classmate
	+ Kim Ji-min † - Fellow classmate
	+ Oh Joon-yeong † - Fellow classmate
	+ Jang Wu-jin † - Fellow classmate
	+ Yang Dae-su - Fellow classmate
	+ Park Sun-hwa - Friend
* Hyosan
	+ Lee Cheong-san's mother † - Friend
	+ Lee Na-yeon † - Fellow Classmate
	+ Kim Min-ji † - Fellow Classmate
	+ Yang Yeong-ju † - Fellow Classmate
* Hyosan High School
	+ Kim Hyeon-ju † - Fellow Classmate
	+ Kang Jin-gu † - Enemy
	+ Lee Byeong-chan - Teacher

## Appearances

I-sak appears via flashbacks in Episode 5

## Gallery

"It's I-sak, not A-sak."I-sak fronting towards Coach Kang.On-jo and I-sak's last conversation.I-sak bitten."On-jo?"Cheong-san beats up zombified I-sak.
## Trivia

* I-sak is based on the character **Sak** from the original Webtoon, *Now at Our School*. In the Webtoon, Sak is bitten while helping Kim Hyeon-ju in the Nurse's Office, and begins the outbreak in the school, infecting Yang Dae-su as well as other students and teachers.
* During the entire series there are zombies who look like her but its unconfirmed if any of them were I-sak, as they are not clearly seen and their nametags are not clearly seen also.
* I-sak was mentioned the most than other characters, Partially due to On-jo comforting Cheong-san about Gyeong-su's death, And On-jo mourning I-sak's death.
* Oddly, I-sak got bitten on the leg and was the longest duration before being turned, originally the transformation lasted less than 5 minutes.

**Hyosan High School Students**
Choi Nam-ra **|**
Jang Ha-ri **|**
Lee Su-hyeok **|**
Nam On-jo **|**
Park Mi-jin **|**
Seo Hyo-ryung **|**
Yang Dae-su **|**
Jang Do-min **|**
Kim Cheol-soo **|**
Lee Cheong-san **|**
Min Eun-ji **|**
Son Myeong-hwan **|**
Yoo Jun-seong **|**
Yoon Gwi-nam **|**
Han Gyeong-su **|**
Hong Dae-won **|**
Jang Wu-jin **|**
Jung Min-jae **|**
Kim Hyeon-ju **|**
Kim Ji-min **|**
Kim Jin-sol **|**
Kim Min-ji **|**
Lee Ha-lim **|**
Lee Jin-su **|**
Lee Na-yeon **|**
Oh Joon-yeong **|**
Park Chang-hoon **|**
Park Hee-su **|**
Shin Hyung-seo **|**
Yang Yeong-ju **|**
**Yoon I-sak**
**Staff**
Archery Coach **|**
Lee Byeong-chan **|**
Park Sun-hwa **|**
Jung Yong-nam **|**
Kang Jin-gu **|**
Kim Kyung-mi **|**
Principal

**Hyosan & Military**
Aides **|**
Choi Sung-won **|**
Hee-su's child **|**
Jeon Ho-chul **|**
Jo Dal-ho **|**
Kim U-sin **|**
Medical Officer **|**
Orangibberish **|**
Se-bin **|**
Song Jae-ik **|**
Park Eun-hee **|**
Party Leader **|**
Ahn Young-sam **|**
Detective **|**
Mr. Lee **|**
Jin Seon-mu **|**
Lee Jae-jun **|**
Lee Jin-su's mother **|**
Mrs. Lee **|**
Mr. Kim & Mrs. Kim **|**
Nam So-ju **|**
Park Young-hwan

**Others**
NIS Agent **|**
Prime Minister **|**
Car Accident Husband **|**
Lab Mouse