My Friend's Older Sister

The story

Joon-soo learns that his friend Hee-gyu's sister Hee-jin has no where to go after being scammed, so he suggests living with him. The two start living together. They are close like brother and sister but they can never be that. The two start getting funny and Joon-soo can't go to sleep at the thought of Hee-jin sleeping just a wall away from him. Mi-na, Joon-soo's girlfriend notices Joon-soo changing and seduces Joon-soo at his house where Hee-jin is. Is it the girlfriend or the sister?

In the same saga

My Friend's Sister Series

In release order

This film

My Friend's Older Sister

2016

My Friend's Sister 2

2018

My Friend's Sister 3

2019

My Friend's Sister 4

2020

Cast

P Park Cho-hyeonJo Hui-jin M Min JoonOh Jun-soo A Ahn So-yoonChoi Mi-na J Joo In-cheolHan Jae-suk S Seo Joon-yeolJo Hui-kyu L Lee Kyeong-joonHead of department (부장) H Hong Doo-riStockings girl (스타킹 녀) A Ah RiJun-soo's Mother (Cameo)