Makoto Masaki (Kazuya Kamenashi) and Haruko Kogetsu (Fumino Kimura) are both 29 years old and single. Since they were children, they have passed each other at various places like on the beach and shrines. Yet, the two are not aware of each other at all. One day, a man appears in front of Makoto Masaki and introduces himself as God. He tells Makoto Masaki about his destined soul mate and that she works next door. When he faces Haruko Kogetsu, he tells her "I'm your destiny."
Drama series reveals why Setoka (Tao Tsuchiya) was rejected 12 times, her fateful meeting with Chiaki (Takuya Kusakawa), meeting her first love Takane (Yudai Chiba) and her school days with her classmates Kunimitsu (Yosuke Sugino) and Chiyuki (Ito Ono).
30-year-old Rinko Kamata (Yuriko Yoshitaka) works as an unpopular screenwriter. She doesn't have a boyfriend, but she has two female friends Kaori and Koyuki. They meet regularly at a bar. There, they complain about their situations and go through what if scenarios. One day, Rinko Kamata decides to go for happiness at love and work.
Successful career woman Takanashi Asuka has an old-fashioned dream of getting married and becoming a housewife. After her long-term boyfriend breaks up with her to pursue his own career goals, she encounters Nanami Ryu (Yamamura Ryuta), a popular newscaster at PTV. Asuka and Ryu get along well, but the last thing she wants is to ever get married. This level-headed pair who want the opposite things in life should never get involved, except Nanami thinks people will lose their freedom once they get married. Moreover, marriage is just an escape place for a woman. "I absolutely don't want to get married," he said. For Asuka, Nanami is an ideal partner, except for his value concerning marriage. And the 'Battle of Value' begins.
During the Sengoku period, the Ii family governs the Totomi region. Due to many past wars, there are no more male successors left to become a lord. Naotora Ii (Kou Shibasaki), the only daughter of the lord, now becomes a lord. She faces a difficult period. The constant love from her fiance, whom she became engaged with at a young age, helps her to keep moving forward.
Set along the Shimanto River in Kochi Prefecture, Japan. "Osozaki no Himawari" depicts the lives of seven people who follow vague dreams, but live an ordinary life.
Jotaro Kodaira (Toma Ikuta) is about to turn 30-years-old. Jotaro has recently been laid off from work and around the same time his girlfriend of seven years dumps him. Jotaro then spots a website recruiting people for work in Koichi Prefecture in a regional revival cooperation.
Kahori Nikaido (Yoko Maki) is clinician sent to work in her hometown of Koichi Prefecture. On the way to there, Kahori meets Jotaro Kodaira.
Kotoha Ninomiya (Manami Higa) works in the general affairs department at a confectionery company. Suddenly, she receives an order to transfer to the public relations department. She has a hard time there. Making things worse, Kotoha Ninomiya learns that Atsushi Imagawa (Dai Watanabe), whom she holds secret feelings for, is about to marry another woman. They have been friends since they were young. Heart broken, she attends Atsushi’s wedding ceremony. At the ceremony, she is moved by Kumi Kuon’s (Kyoko Hasegawa) congratulatory speech. Kotoha Ninomiya is a legendary speech writer.
Yuzuko Nanakusa (Koyuki) was betrayed by her husband. She now raises her son and daughter as a single mom, in addition to working at a company. One day, the company she works for goes bankrupt suddenly. She loses her salary and savings. While not knowing what to do next, Yuzuko Nanakusa is contacted by attorney Shinichi Kakihara (Atsushi Ito). They went to the same high school together.
Shinichi Kakihara tells Yuzuko Nanakusa that there is a something more to her company's bankruptcy. To protect the life of her two children, she attempts to reveal a big evil.
Mikuri Moriyama (Yui Aragaki) is 25 years old. She doesn't have a boyfriend and doesn't have a job even though she holds a graduate degree. Everyday, Mikuri Moriyama has a feeling that she is not needed. Her father, unable to see her suffering anymore, arranges for her to work as a housekeeper. Her employer is 36 year old Hiramasa Tsuzaki. He is single and works for a company. A series of events leads them to marry as a working condition.
Riko Shirono (Mikako Tabe) doesn't have any big expectations for a man in her life, but she works as a love simulation game planner. She receives a request for a new love game from app company TIMEIS. Soichiro Kurokawa (Issei Takahashi) is the CEO for the company. He is almost perfect, but he can't understand woman’s mind.
One day, Soichiro Kurokawa (Issei Takahashi), who likes his subordinate Momose, asks Riko to teach him about love techniques. Due to Riko Shirono’s help, Soichiro and Momose get close, but Riko finds herself becoming attracted to Soichiro Kurokawa.