
Sim Deok-su

Park Pyeong-dal

Min Yeong-sook

Detective Choi

Kim Ji-eun

Constable Lee

Lee Jeong-ae

Bae Du-shik

Kim Soo-kyung

Young Mr. Choi

Na Jeong-hyuk

Young Park Pyung-dal

Etsuro Kurosu faills getting into a university and becomes a hikikomori. One day, he tries to hang himself from a hook on the wall in his apartment. He fails, but his attempt leaves a hole in the wall. Through the hole wall, Etsuro Kurosu can now see Rio Miyaichi. He becomes fascinated with the girl that lives next door. Later, while peeping at her through the wall, Etsuro Kurosu sees her in the process of brutally murdering someone. He screams and is caught by her. Etsuro Kurosu confesses that he loves her and they start to date. Etsuro Kurosu feels happiness in his life, but what will happen to him? Will he be murdered by Rio Miyaichi?

Yeo-ul likes basketball a lot. Her best friends are Ho-su and Ju-yeon. They have played basketball since they were children. One day, Ho-su suddenly tells Yeo-ul that he likes her. She tells him that he is just a good friend to her. Their relationship becomes awkward. Meanwhile, Yeo-ul has a crush on Ho-jae. He is the top player on the boys' high school basketball team.

Kwon Yeon-woo is a thirty year old low-level civil servant who works in a district office; quite innocent for his age, he has been on numerous blind dates in an unsuccessful bid to find a wife. After moving into a new place, he begins to encounter a high school girl, Soo-yeong, on his way to work every morning, and she begins to develop feelings for him. Meanwhile, Kang Sook has just started working at the district office straight out of high school, and falls head over heels for older woman Kwon Ha-kyeong.

Swimming instructor, Young-eun is a single mom raising her 7-year-old daughter, So-hyun. However, a series of tragic events happens as So-hyun's puppy falls from the apartment and dies, and So-hyun bullies other kids in school. Despite her mom's earnest efforts to address So-hyun's mental disorder, her peculiar behavior persists. Twenty years later, Min, who works in handling unclaimed deaths, meets a new colleague, Hae-young, and they form a close bond. However, as Hae-young warmly integrates herself into Min's life, Min begins to feel uncomfortable and suspicious about her intentions.

Follows the lives of two couples who live in the same neighborhood. Kim Man-Suk delivers milk on a motorbike at dawn. He curses a lot, but actually has a warm heart. One day when he goes up a slope, he meets Ms. Song - a lonely woman who works hards by collecting and selling scrap paper. Man-Suk feels something special toward Ms. Song. Jang Kun-Bong works in a parking lot. Jang Kun-Bong has a wife who suffers from Alzheimer's. He works from dawn until late at night. After work he comes home and takes care of his wife.