How to Buy a Friend

How to Buy a Friend is a 2020 South Korean television series starring Lee Shin-young, Shin Seung-ho, Kim So-hye, Oh Hee-joon, Min Do-hee, and Cho Yi-hyun. Based on the Daum webtoon Friendship Contract by Laad Kwon, it aired on KBS2 from April 6 to 14, 2020.

Synopsis
Two teenagers began a contractual relationship: Heo Don-hyuk promises to protect Park Chan-hong from his bully if the latter helps him uncover the truth behind the suicide of his girlfriend.

Main

 * Lee Shin-young as Park Chan-hong
 * Also known as Ninja among his schoolmates, he is an ordinary high school student and has a talent for writing. He has a crush on Uhm Se-yoon.


 * Shin Seung-ho as Heo Don-hyuk
 * Also known as Iron Man, he is notoriously known for his fists and has fought 10 men at one shot. He landed in juvenile detention and came to the school that Chan-hong, Se-yoon and Kyung-pyo attend.


 * Kim So-hye as Uhm Se-yoon
 * The prettiest and most popular girl in school.


 * Oh Hee-joon as Oh Kyung-pyo
 * Chan-hong's best friend.


 * Min Do-hee as Choi Mi-ra
 * Se-yoon's best friend, she was also close to Seo-jung in arts class.


 * Cho Yi-hyun as Shin Seo-jung
 * The senior who committed suicide at school, she was also an art student and was close to Se-yoon and Mi-ra when she was alive.

Chan-hong's family

 * Kim Won-hae as Park Choong-chae
 * Baek Ji-won as Oh Jung-hee

Pyung-seop's people

 * Jang Hye-jin as Jo Pyung-seop
 * Kim Do-wan as Kwak Sang-pil

Jeil High people

 * Kim In-kwon as Woo Tae-jung
 * Kim So-ra as Choi Jung-won
 * Lee Jung-hyun as Kim Dae-yong
 * Yoo Se-hyung as Ahn Seong-do

Production
The first script reading took place in January 2020 at KBS Annex Broadcasting Station in Yeouido, Seoul, South Korea.

Ratings
In this table, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.