Yukie Sakamoto

As the devoted wife of Hisanobu Sakamoto and mother to Ryouta, this Tokyo-based housewife plays a pivotal role in the series' inciting incident. Her actions directly lead to Ryouta being nominated for the deadly live-action version of the Btooom! game. Following a tragic suicide attempt, she is discovered by her husband and subsequently hospitalized, where she remains in a deep, unconscious state as the story unfolds.