Yakuza's Lady 4

Misa, who hates yakuza, is saved from her predicament by yakuza Ryuji and gradually becomes attracted to him. Then, Misa becomes a co-signer for her ex-boyfriend and is forced by the yakuza to become the yakuza boss's woman in return for the debt. Cornered, Misa comes up with a plan...

Misa loves Ryuji, who is steadily rising to become a gang leader, but is perplexed by her inner contradiction of hating the yakuza. Their lives are precariously balanced until one day, when Misa's senior, Yukari, returns to town. An unbridgeable emotional distance is created.

Misa has insulated herself from her beloved Ryuji and left the city, and has started a new life as a coffee shop clerk. Meanwhile, Ryuji, who is frustrated by the loss of Misa, discovers drug trafficking within Shinogi and gets caught up in an internal conflict. Unaware of this, Misa leads a peaceful life, until...

Misa's father, the Minowa clan leader, was killed by assassins from the rival organisation Shinsui Rengo. She decides to live her life as a yakuza and together with her boyfriend Ryuji, she is building up the gang. However, the betrayal of the acting chairman, Izawa, who was a close associate of her father, is discovered. A takeover in collusion with the Shinsui Union is taking place behind the scenes.

Maki, the female bar manager, has a dark side as a "yakuza woman" who supports Tetsuya of the Uradora clan of the Kanto region. Maki's true identity is accidentally revealed to Natsumi, who works at the bar, and Natsumi's boyfriend Junichi, who has a crush on Tetsuya. Natsumi reports the incident, and the Uratora-gumi is temporarily on the verge of dissolution...

The Olympics have triggered a construction boom, and the Uratora clan, which aims to gain industrial waste concessions, plans to bribe officials and use the money as a source of income. However, a fight breaks out with the Nogami gang, who also aim to make a profit from industrial waste. The office is blown up, and Maki gets caught up in the fierce conflict.

Yoda, the president of Yoda Painting, owes a large sum of money to the Uratora clan, but the shabu Yoda was dealing in is given to Tetsuya and his group, who release him. Yoda is later found dead, and this makes the police aware of the shabu deal. The murder weapon for Yoda's murder is also found by the Uratora gang...