Shoko Masatsugu was a member of the Knights of the Eastern Calculus. She was the mother of Shou Masatsugu. She commited suicide along with all of the other Knights in [[Layer_10|Layer 10]]. She was presumably restored to life when Lain deleted herself from physical existence in [[Layer_13|Layer 13]]. | Shoko Masatsugu was a member of the Knights of the Eastern Calculus. She was the mother of Shou Masatsugu. She commited suicide along with all of the other Knights in [[Layer_10|Layer 10]]. She was presumably restored to life when Lain deleted herself from physical existence in [[Layer_13|Layer 13]]. |