Unfinished Deal (working title)

Mogul Magnus has a business that needs expanding. One of the locations was Mustafasu, Japan, designated to his son, Stephen.

Stephen has two children-Leif (early 30s) and Signe.(late twenties, 28).

His business attracts the attention of a Boss in a similar type of business. Higari Maijima pays them a visits and first meets Signe. She is a beautiful young lady; artistic and has a nice voice.
After his first meeting with Stephen decides to keep a mutual friendship to look out for each other.

Magnus disagrees, but years later when Stephen suddenly passes Magnus announces to the next in line, Leif that he needs to start expanding further.
He breaks some oaths and now peace needs to be restored between the rival parties.
Signe might be the right bargaining chip for this.