The only know member is Kozuki Toki, who went by Amatsuki Toki until she married Kozuki Oden over 28 years ago. By marriage, Oden can be consider part of the family, and similarly by lineage, her children Kozuki Momonosuke and Hiyori can also be considered members.
At least around 800 years ago, a faction of the Amatsuki Family lived outside of Wano Country. Around 800 years ago, a young woman named Amatsuki Toki tried to reach Wano and used her ability to move forward in time.
In Wano, the Amatsuki family were powerful supporters of the ruling family, the Kozuki Family, earning the family heads to be honored with the title of daimyo of a yet unconfirmed region of the country.
Over the course of two years, Toki fell for Oden, and two became a loving couple. 28 years ago, Toki gave birth to their son, Kozuki Momonosuke, and two years after that, their daughter Kozuki Hiyori.
25 years ago, when Oden returned, he was rejoice to be reunited with his family, and learned that Toki worked tirelessly to not make the citizens of Kuri resent Oden for his absence. He was also informed about Orochi's actions, and in a fit of rage for attacking his family, headed toward to Flower Capital to retaliate.
For the next five years, Toki stayed by Oden side when the latter humiliated himself on a weekly basis as part of an undisclosed agreement with Orochi.
20 Years ago, when Oden was killed, the Beasts Pirates attacked Oden Castle, with Toki and their children still inside, Toki used her time abilities one more time to send her son and several of their retainers to the future, and ordered another to protect her daughter, while she stayed behind to send a massage to their allies about the time when the Kozuki hair would return.
At the same time, Orochi offered the daimyos to follow him, but the refuse and rebel, for all but Shimotsuki Yasuie to be defeated by Kaido. It is unknown whether anyone of Amatsuki Family is still alive today.
- "Amatsuki" (天月 heaven moon?) fits most of the Wano Country families theme of having the kanji "Moon" in its name.
- It is one of the only two families related to Wano Country that is known to exist during the Void Century, the other being the Kozuki Family.
- It is one of the only two families related to Wano Country that is known to have members live outside of Wano, the other being the Shimotsuki Family.