Sakamoto, Yukie

坂本幸江

Yukie Sakamoto is the mother of Ryouta Sakamoto and the wife of Hisanobu Sakamoto.
Before the series begins, Ryouta consistently rebuffs his mother's efforts to secure him a legitimate career beyond gaming and to end his status as a NEET. During their disputes, Ryouta frequently strikes his stepfather and berates his mother. It is later disclosed that Yukie nominated her son for the island simulation run by Tyrannos Japan.
A few days after Ryouta arrives on the island, Yukie is depicted as carrying significant guilt over nominating her son to the Btooom! game. Driven by this remorse, she attempts suicide by cutting her wrists with a razor blade in the bathroom. Hisanobu discovers her upon returning home; he covers her wounds with a towel and prepares to call an ambulance, but pauses to hear her confession. She explains that she entered Ryouta into the Btooom! game because she knew her husband had been laid off and would be unable to support the family, as well as due to Ryouta's mistreatment of her and Hisanobu. Following this, she apologizes to both her son and her husband.