List of Characters appearing in the novel

(Updated as of chapter 260, work in progress)
May contain SPOILERS, read at your own risk.

Before you read...
Please note that this was created only recently, and it does not count EVERY SINGLE CHARACTER that has appeared in the novel.

If you find any info on the following, please tell me in the comments below
-Maru's father's name
-ANYTHING about girlfriend's family (name, first appearance chapter, etc)
-Hanja teacher's name
-Info on Dowook's family (His father's, aka petrol station's owner's, name, his sister's name, etc)

If you want other characters added, or find any mistakes in the list, please tell me in the comments as well, and I will try to update them.

Han Maru
The main character of the novel. He is sent back to his high school days after a traffic accident kills him.
Han Bada
Maru's sister. First appearance in chapter 1.
Lee Sunji
Maru's mother. First appearance in chapter 1.
Han ???
Maru's father.
Han Gaeul
Maru's daughter before his death. First mention in chapter 8.

Maru's Girlfriend (yet to be named)
Maru's girlfriend & wife in previous life. First mention in prologue, first appearance in ???
Girlfriend's mom
Works as a writer.
Girlfriend's dad (deceased)
Used to work for a publisher.

★★★Woosung Engineering High School
★★Teachers
Park Taesik
History teacher. Is in charge of the acting club. First appearance in chapter 9.
Hanja Teacher
Opposes everything that the acting club does. First appearance in chapter 7.

★★3rd year
Lee Yoonjung
ex-president of the acting club. First appearance in chapter 6.
Lim Danmi
ex-member of the acting club. First appearance in chapter 6.
Bang Joonghyuk
ex-member of the acting club. First appearance in chapter 6.

★★2nd year
Hong Geunseok
Design class. First appearance in chapter 11. Joins the acting club in his 1st year, but leaves due to disharmony in the 2nd year.
Lee Yurim
Design class. First appearance in chapter 11. Joins the acting club in her 1st year, but due to an incident, she transfers to a school in Jejudo
Kim Soyeon
Design class. First appearance in chapter 11. Joins the acting club in her 1st year, but leaves in 2nd year. Used to be best friends with Yurim.
Park Taejoon
Electrical engineering class. First appearance in chapter 11. Joins the acting club in his 1st year, but leaves in 2nd year.
Han Maru
Electrical engineering class. Joins the acting club in his 1st year.
Park Daemyung
Electrical engineering class. First appearance in chapter 5. Joins the acting club in his 1st year and become the club president in the 2nd year.
Han Dojin
Electrical engineering class. First appearance in chapter 2. Joins the acting club in his 1st year but leaves in pursuit of his dream of being a chef in his 2nd year.
Kang Dowook
Electrical engineering class. First appearance in chapter 5. Ex-delinquent. Joins the acting club in his 2nd year due to lack of members.
Lim Jichul
Electrical engineering class. First (and only) appearance in chapter 14. Gets into a homework copy incident with Dowook.
Kim Iseul
Computer class. First appearance in chapter 11. Joins the acting club in her 1st year, but leaves in the 2nd year

★★1st year
Jeon Aram
Design class. First appearance in chapter 195. Tomboy. Joins the acting club.
Lee Jiyoon
Design class. First appearance in chapter 194. Shy. Joins the acting club.
Ahn Bangjoo
Mechanical engineering class. First appearance in chapter 173. Very lively and energetic. Joins the acting club. 

★★★JA Production
★★Executives
Lee Junmin
CEO of JA Production. First appearance in chapter 67.
Kang ???
Head manager. Referred to as "Head manager Kang". First appearance in chapter 256.

★★Contracts
Hong Geunsoo
Hong Geunseok's older brother. Maru remembers him as a successful actor in his previous life. 1st generation and founder of the acting club "Blue Sky"
First mention in chapter 11, first appearance in chapter 39.
Yang Ganghwan
Maru's acting teacher and senior. Is called 'crazy' by others due to actually trying living homeless in order to grasp what being homeless is like. First mention in chapter 77, first appearance in chapter 78.
Yang Miso
Instructor for the acting club in Maru's 1st year. 1st generation and co-founder of the acting club "Blue Sky". First appearance in chapter 18.
Kim Suyeon
Instructor for the acting club in Maru's 2nd year. Uses any means (usually her body figure) to get what she wants. Currently pursuing Geunsoo. First appearance in chapter 76.
Han Maru
Yoo Sooil
Idunno what to describe him... First appearance in chapter 255.

★★★NL Company
★★Executives
Park Narim
CEO of NL Company. First appearance in chapter 251.
Choi ???
Head manager. Referred to as "Head manager Choi". First appearance in chapter 253.

★★Contracts
★TTO (idol boy band)
Yoo ???
Manager. First appearance in chapter 250.
Ahn Sungjae
First appearance in chapter 250.
Lee Hyuktae
First appearance in chapter 250.

★★★Yellow Star
★★Executives
???

★★Contracts
Yoo Jiseok
Maru's self-proclaimed rival. First appearance in chapter 221.

★★★★Cast of the movie "Who Gave the Elder His Hammer"
★★Staff
Choi Joonggeun
Director
Gwak Joon
Script writer & original author

★★Actors
Yoon Moonjoong
Elder, main character of the movie. Also is Maru's mentor of sort.
Park Taeho
First son
Jung Yoonhae
First son's wife
Ahn Joohyun
???. Also Ahn Bangjoo's elder sister. Has purple hair. First appearance in chapter 139
Kang Sooyeol
Second son
Kim Suyeon
Second son's first daughter
Lee Yoojin
Second son's second daughter
Han Maru
Delinquent 1
Yoo Jiseok
Delinquent 2
Ahn Sungjae(TTO)
???

★★★Others
Jung Haejoo (deceased)
Lee Junmin's dream actress. First mention in chapter 183.
Kim Dongwook
Entertainment journalist. First appearance in chapter 250.
Lee Hyuk
Famous actor. First appearance in chapter 225.
Yoo Bokja
The old lady Maru saved. She forfeits the chance of living again to him. Appears in prologue.
Mysterious existence
Is also called 'angel', 'grim reaper'. Allows Maru another chance at life. Appears in prologue.
Yoon Mintae
A person under Lee Junmin that learns and works in stage production. First appearance in chapter 94

Characters to be added: Changhu and the group of delinquents