The Hyena Has Seven Lives.

There are as many inheritances as there are people, and as many disputes as there are inheritances. Today, another fierce "family quarrel" over an inheritance began at the funeral of a well-known author. One man, Nanao Haie, arrived at the funeral, attracted by the smell of such a "family quarrel." Haie, who claimed to be a detective specializing in inheritance disputes, uses his hyena-like senses to sniff out the truth behind a "video will" left by the deceased writer...! This is an ambitious work that weaves various types of inheritance battles into an exquisite mystery!

(Source: Comic Days, translated)

Note: Includes 1 extra chapter.