Yukari Tatsui

Arima Kousei won numerous piano competitions while under the strict watch of his mother. He was known as the human metronome during that time. Since the death of his mother, Kousei has been unable to hear the sound of his piano. He then meets Miyazono Kaori through childhood friend Sawabe Tsubaki. Kaori plays the violin and has a free sprit. Since meeting her, Kousei is able to face the piano again. Meanwhile, Kaori holds a secret.

Based on the mystery novel by Yagi Keiichi, the former Deputy Prime Minister was investigated after leaving a national debt of 1,085 trillion yen, but charges were mysteriously dropped. Now, his granddaughter has been kidnapped. The ransom? Either 1,085 trillion yen- the same as Japan's national debt- or a formal apology and financial reconstruction plan from the former Deputy Prime Minister are to be prepared within the next seven days. Can the police save the young girl before the deadline?

Eiko Yagami (Ryoko Yonekura) is a "Marubo", a unit of Ueno Central Police Station's Organized Crime Division which deals directly with organized gangs to try and keep the peace. However, Eiko has some sidelines: she's a moneylender to her fellow police officers without charging interest in return for information and is also willing to do the odd side job for those on the criminal side for the money. One day, Kasumi (Riho Takada), who is the daughter of Senma-gumi gang's leader (Toshiyuki Nishida), is found stabbed to death. As this threatens to pit gang against gang, Eiko and the police have to hurry and find her killer.

Detective Seiichiro Watari is nearing retirement, but is still bothered by an unsolved case from seven years ago when the decomposed corpse of a female was found by a fisherman in the sea of Otaru. The body was never identified so the case was never solved. Three years after his retirement, Watari unexpectedly discovers a clue that may finally solve the case.

Akito has been the ears and voice of his mother, Reiko, since he was a child. Reiko was born deaf and has long dreamed that her son would become a professional pianist. Akito is studying to enter a prestigious music college, but he begins to have doubts about his talent. One day, he meets Izumi, a deaf girl who plays in a street band. He is attracted to her positive nature, but his mother disapproves, fearing Izumi could hinder his success in "a world with sound." Reiko insists Akito focus on his piano, but her expectations burden him. Then Akito begins to question his mother's attitude towards life as well as his own when he discovers something new about her.

Tomonaga Akiyuki and his wife Yu have been married seven years. Akiyuki is a graphic designer, and is quite happy in his work and private life. One day, he attends the wedding of his younger half-brother Ichinose Ryo. However, Ryo runs off with a young woman who appears at the wedding, leaving the bride Jumonji Azusa at the altar. Akiyuki bows his head and apologizes to Jumonji, and this is the prelude to a growing intimacy between them. Is it love, or is Jumonji after revenge? And what do Yu and Ryo think as they become aware of this relationship? Akiyuki and Yu, it seems, are headed for divorce. Further complications arise for Akiyuki and Yu when Akiyuki’s close friend Shunsuke and lawyer Reiko, advising on divorce, get involved.

Aoki, a naive, gullible young girl, strays towards the party life instead of taking her school work seriously.

To pursue her dreams, Sakurai Kazumi (Wakui Emi) quits her job and goes to New York to study jewelry design, against the objections of her naggy and stubborn but well-meaning father (Takeda Tetsuya). As part of remaking herself, she changes from spectacles to contact lenses, even though she has problems adapting to them. When she accidentally drops her contact lenses, a mysterious man helps prevent them from being stepped on, but he walks away before she can talk to him. Some years pass, and Kazumi is on a plane home after receiving a letter from her brother Taku saying their father is critically ill. She has morning sickness and has some run-ins on the plane with a sloppily-dressed man, and it is only when she drops her contacts and the man helps her in a similar way that she recognises him (Sorimachi Takashi). She chases after him and asks, "would you like to do some work (arubaito)?" It turns out that Kazumi in her last letter from New York had written that she was in a relationship with someone and that they might soon marry, but since then she has broken up with him, and she didn't want to make her father upset by coming home alone. The man, a freelance journalist named Yoshimi Kaoru, agrees to pretend to be her fiancé.

The series revolves around Aya Kuramoto, a deaf and mute girl from Hokkaido who is in love with a doctor named Shūichi Nagai. After Shūichi leaves for Tokyo, he has an accident and loses his memory. Aya travels to Tokyo and encounters Takumi Nagai, Shūichi's brother. The sequel series, Heaven's Coin 2 (Zoku Hoshi no Kinka), continues where the previous series left off. The third series, Shin Hoshi no Kinka uses a new set of characters. The song Aoi Usagi by Noriko Sakai was used as the opening theme.

A man who lost his wife and a woman whose husband died have a fateful meeting in connection with a double suicide and fall madly in love.