Kyoichi Suzuki is an average college student in his junior year. Although he's not in one of the top universities, he's satisfied with his college life studying architecture. Kyoichi left home and is finally on his own, living in a beat-up apartment in Tokyo. However, this apartment building is home to some out-of-the-ordinary residents, who are always bugging Kyoichi. His next-door neighbor hits Kyoichi up for a loan when he finds out that Kyoichi just got paid. His other next- door neighbor who works at a nightclub, always calls Kyoichi, demanding him to come pick her up, because she's so drunk. Other than that, Kyoichi is satisfied with his normal life, until he meets a girl one day...

On her seventh birthday, Chalita's entire family was killed. Kawin/Kevin, was given the option to slay three people in order to protect one. His guilt drove him to distance himself from her.

In her youth, Chalita is adopted by a mysterious stranger who is known as, "Nai Noi (Young Boss):" He turns her life around and is her means of support. Kawin moves next door to Chalita and their lives become entangled. Feelings blossom, and happiness is reintroduced to Chalita's life, but Kawin risks losing her, if his secret were to ever be revealed. If Chalita ever recalled the past, he will lose everything.

Lee Woo Joo meets Kang Tae Min, a man who was taught in the art of tasting wine. Tae Min inherited the wine production from his family and opens Woo Joo's eyes to the world of wine. He has a steady relationship with his girlfriend, Ji Seon, but wavers when he meets the spunky Woo Joo. Joey Park has a deep, dark secret that has haunted him for most of his life. He accidentally set the fire that killed Tae Min's parents. How will Tae Min feel when he learns that a friend caused his parents' death?

Two teenage boys from starkly different backgrounds find themselves joined in a common search to discover how to do the right thing and find happiness in life. One boy, whose father is an alcoholic, works hard to care for his younger brother and sister, while the other enjoys the privileges of a wealthy family, but is starved for his father's love. Their friendship reflects the sadness, pain, and sometimes cruelty that can enter into the relationships between fathers and sons in today's society.

Fujio Hanaoka, Seiji Kirihara, Shinya Oochi, Masaya Oochi, Madoka Ishii, and Arata Maekawa are close friends who grew up together. While celebrating Seiji's birthday, the group unearths their ten-year-old time capsule, and create a new one, containing penned letters to their future selves, for ten years on. Unbeknownst to the group, they would experience a life-altering tragedy that would not only alter their reality but force them to reassess the verity of their time capsule messages.

The series follows the romantic journey of Yeon Bo Ra, a celebrated love coach and successful author of romance novels, and Lee Soo Hyuk, a charming man who grapples with matters of the heart.

As a discerning publishing planner, Soo Hyuk is not easily impressed and initially has a negative impression of Bo Ra. However, their lives become entangled unexpectedly, and he becomes increasingly drawn to her.

Meanwhile, Han Sang Jin, Soo Hyuk's friend and business associate, heads the Jinri book publishing company.

Yuuji is still a first-grade student, he is having a very hard time understanding what has happened to his mother and the fact that she won't be coming back.

At the very beginning of the first episode, the voice of the late mother (played by Mimura) is reading from a picture book that she wrote for Yuuji before she died. It is about a mother who dies, but promises to return when the rainy season comes. Yuuji believes in this story and thinks that his mother will come back when the rainy season comes. And surprisingly... she actually does.

When it begins raining on a June morning, Yuuji runs out into the forest to the special place where he used to play with his mother. His father, Takumi (played by Narimiya Hiroki) chases after him to get him to go to school. When they arrive at the old ruined building where they used to play, Yuuji's mother, Mio is waiting there completely alive and healthy, but she has no memory of them or anything that occurred during her life.