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The story is about an invisible/ghostly twin following her sister.

The famous story of a young girl known as the genius strategist from Ancient China's Northern Song Dynasty who will fall in a love of the heir of the Generals of the Yang family, Yang Zong Bao, and who will fight for her country. It is the story of the rise of a girl who will take the command of the Emperor's army, in a society where women had no right to be anything other than a daughter, a sister, a wife and a mother.

Tsung Ka Yuen is an excellent police officer whose team always seems to get assigned to the most interesting cases in all of HK. He works well with his police colleagues and is looked upon by everyone as the big brother. Ka Yuen is also very close to his dad, brother, and stepmom. Ka Yuen wife died from cancer and he hasn't dated anyone since. Later, Ka Yuen starts to like Pauline but before anything happens with her, he dates Siu Tong Choy, one of his colleagues. Because the crimes that Ka Yuen's team deals with are mostly murders, in comes the forensics unit! The intelligent and modern forensics examiner, Pauline Lip Bo Yin. Her beauty and brains can be a bit intimidating so she too has not had much luck at love. As with Ka Yuen, Pauline also has an interesting family history. Her father was a well-known bomb expert who died when she was quite young. Pauline has remained extremely close with her mother, sister, and niece.

Spin-off story to Watashi no Kaseifu Nagisa-san.

Chow Ming Hin (Damian Lau) single-handedly builds his family shipping business into a successful enterprise despite other family members who are either corrupt or incompetent. His son Chow Tin Chi (Julian Cheung) is earmarked as his successor, he is a spoiled brat who enjoys playing pranks on others, in particular Ho Seung Hei (Charmaine Sheh). Ng Yuk Hing (Angie Chiu) is both Chow Ming Hin's right-hand-man in business and love of his life, even though he is married. Eventually he marries her as a second wife and has a child(Tin Chi's half brother) together, arousing much jealousy from his first wife Lee De Yung (Lui San).

Abandoned as a child by his mother, Hasumi Sachiyo, Fujishima Haru is a mentally challenged man that has grown up and worked at the Sakurai Bakery as a baker. Working with him at the bakery is the owner Sakurai Kyoko and Tashiro Miki, a girl who is also mentally challenged and is like a sister to Haru. At night, after the bakery is closed, Haru and Miki attend a night class with other mentally challenged adults. Their teacher at the class is Toya Erina who not only is their teacher but also their friend. One day, Erina is approached by her old friend Kobayashi Rumiko about a candidate in the research she is conducting with professor Tatabe Shinichiro and Tokunaga Atsushi that could possibly increase the intelligence of the mentally challenged. Reluctant at first, Erina changes her mind when she sees the resolve in Haru to become smarter so that his mother will come back for him. With the success of the surgery, Haru becomes more and more intelligent. However, with his newfound mental abilities comes problems. Haru now must face the challenges his new self-awareness presents such as the people around him and his own emotions.

After a 13-year imprisonment in Hong Kong, Mong Fu returns to Thailand to discover that his girlfriend had died and had left him a daughter, Ploy. With the help of Sister Mioko, a caretaker for orphans, Fu and Ploy begin the long hard road to know each other. However, a Thai boxing promoter tells the truth about why Fu went to prison. It turns out that Fu, who is a former kickboxer himself, killed a kickboxing champion outside the ring. In an attempt to bring honor back, Fu challenges the current champion in a fight. Meanwhile, a relationship begins to ensue between Fu and Sister Mioko.