Sumako Kagisu

"'Amau is a place for people trapped in time... It's not for someone like you.' - Sumako Kagisu"Sumako is an kind, elderly woman who buys Akiyuki Takehara from slave traders and takes him into her care until he regains his memories. She is also Commander Kakisu's mother.

Biography
Sumako is first mentioned by Commander Kagisu while he and Prois Sukakki discuss Sentan Island, although he tells her that Sumako is deceased.