Yukie Sakamoto

Gender: Female   

Occupation: Housewife
Hometown: Tokyo

Yukie Sakamoto is Ryouta Sakamoto's mother and Hisanobu Sakamoto's wife. She is responsible for Ryōta Sakamoto's nomination to the live-action Btooom! game. She later attempts to commit suicide, but is found by Hisanobu and later treated at a hospital where she is now unconscious.