Kobayashi Haruka fell in love before finding out that her boyfriend was actually a married man. At that time, a regular customer predicts that she will wind up meeting 3 different men. She begins encountering them just as predicted. There's the hairdresser Shintaro, the band vocalist Yu, and the bartender Yoshi. What will come of these fateful encounters?

A housewife, Saijo Kinuka lives with her husband Makoto and her high school daughter Honoka and her middle school son, Yuto. Due to the death of Makoto's father, they decide to move to a large European style house in Kamakura, with the second wife of Makoto's father, Saijo Chizuko. There, they host a home welcoming party, at which Kinuka invites her guests such as Suganuma Kyoko and company peers of Makoto. To every sense of the word, it is a perfect party in a perfect new environment. Like Chizuko will show-off her belly dance skills in front of everybody. This is when something shocking happens. While Kinuka is preparing for the party, suddenly her ex-boyfriend Seno Itsuki appears out of the blue. Due to loan payments which he has to deal with, he had decided to live in the attic of her new house!

Satoko, a librarian is not confident with herself because she has never been in a relationship although she is 30 years old now. She encounters a gentleman named Ryosuke and falls in love with him instantly. A man who proclaims he is "Stendhal", the author of the French literature "Love Theory" suddenly appears in front of Satoko who hopes to change herself every day. It is a good thing for Satoko who is surprised at seeing this "illusion" which, in her mind, appears because she is so worried about her love. What's more, to make Satoko and Ryosuke have a blossoming love, Stendhal guides Satoko with love secrets and gradually changes her! In this way, they two will become closer. However, Satoko has a "certain past secret" she does not want to be known by anyone...

Miyuki is a timid florist, frustrated with her non-existent love life. While down on her luck she runs into an old classmate (and crush) of her's on the street. Things are going great when her younger sister, Haruka, who has taken away every guy that she's ever liked, begins to weasel her way between them. Can Miyuki overcome her obstacles and fight for the man she's loved since high school?

Rensuke Hazuki, the president of Regolith, a rapidly growing interior manufacturer in Japan, is planning to expand into China. Rensuke boarded the bustling city of Shanghai . What awaits Rensuke there is an encounter with Maemi Ninomiya, an interior designer who has worked with him, Yuzuki Onuki, a popular model who is the daughter of a wealthy family, and Ryu, a Chinese woman who has a girlfriend Shuumei. The meeting with these three women brings a turning point in Rensuke's life.

Shinya Yukimura and Ayame Himuro are two scientists that want to find out if love can be solved by a scientific theory. These two scientists also have feelings for each other and want to be able to solve their feelings through similar theoretical facts. With this perfect opportunity, these scientists will attempt to solve the theory of the love they express for each other.

Mio Sudou, a 30-year-old office lady has gone five years without a boyfriend and has forgotten all about love. Shuuji Mashima, a foreign-affiliated consultant has not had a girlfriend in seven years and has lost almost all interest in women. Meeting at a matchmaking party, Mio is disgusted by Shuuji as he states, "I am not into women." However, when Mio makes a provocative comment toward Shuuji, things take an unexpected direction.

Sakurazawa Jun is 27 years old and excels in her job, is fashionable, has many hobbies and lives a very fulfilled life. Her life is driven by her primary motto "love is just a waste of time!" and she has no experience in romantic relationships or with men. Before her appears Nagamine Shuma, an incredibly handsome chef in training who knows exactly what women want to hear and feel. He's someone who lives in the moment, lets people come and go, is cool and not serious about love. For some reason, Shuma is intrigued by Jun and decides to approach her...

Minami Hinako is the company president of Office CAT, a mysterious detective agency that accepts requests from women who wish to have help with their relationship issues. The company’s objective is not just to facilitate a breakup for the client, but to “abduct” the targeted individual. Otherwise known as “Thief Cat” Minami Hinako has a 100% robbery success rate. She skilfully manipulates her appearance and personality to make the target fall for her, thus tearing apart relationships between men and women. One day, the company receives a request from a woman named Hayakawa Risa, asking for help in stealing away her abusive boyfriend.

Takasugi Remi is the most popular rental girlfriend of Rental Lovers, a company which provides a girlfriend rental service. Men who date Remi fall in love with her in the blink of an eye. Although she understands the likes of customers and completely becomes the ideal girlfriend in attitude, speech and even character, when her work ends, she never smiles. Moreover, there is a strange bandage around her neck. Then Remi gets rented by a university student Yamada Kosuke who is madly in love with her.

Sasano Kaori and her husband are very close but Kaori starts to notice that her husband has "changed". One day, while talking to her best friend Yuki, Kaori learns that Takuya has a secret account with many posts that hint an affair. Kaori later finds out that the partner is Mishima Mutsumi and visits Mutsumi's husband, Kyosuke, and asks for his cooperation in separating Takuya and Mutsumi. Kyosuke agrees with the condition that Kaori sleeps with him. While following and monitoring Takuya and Mutsumi, Kaori begins an affair with Kyosuke, and later falls in love with him.

Life is simple for Sasamoto Sawa, a young housewife, but when the adulteress Takigawa Rikako moves into her neighborhood, so too does a new world of sophistication and sex. After Takigawa is nearly caught in the act, Sasamoto covers for her during the ensuing aftermath, unwittingly involving herself with a handsome teacher named Kitano Yuichi — and discovering her own desires for extramarital passions.

The top student at a prestigious prep school risks it all when he falls in love and boldly breaks the institution's strict "no relationships" rule.

This drama is a love story between Kataoka Sakuya, a grim reaper who comes to the human world for the first time, and Mochizuki Nayuki, a woman who lost her father at a young age and has devoted her life to raising her only remaining family—her younger brother. As they meet, they gradually come to understand each other, and slowly, they begin to fall in love. However, a fate that will dramatically change their lives awaits them both…

Nanako returns to her hometown on the tiny island of Aguni to meet her grandmother Nabbie. However, when Nanako's ferry arrives, it is also carrying Nabbie's former lover, who has returned to Aguni after a long absence.