Hifumi (6-sided die), Akito Ashimine (scissors), and Arumi Ashimine (crystal ball) are objects that gained life at the same time, so they became sworn siblings. Hifumi can manipulate luck. Akito is a strong fighter, and Arumi can see into the future and the past. They sought to coexist with humans but were mistreated, so they later worked to live freely.
From the anime series Tsugu Tsugumomo
Sister/Brother Complex 