Biography
One of Mami's friends. Her pet name is "Sacchan." She is the calmest of the group. She seems to be Takenaga's girlfriend. (Source: Wikipedia)
Appearances
Sachiko Mamiya FAQ
What anime is Sachiko Mamiya from?
Sachiko Mamiya is a character in Esper Mami.
What is Sachiko Mamiya's Japanese name?
Sachiko Mamiya is written 間宮幸子 in Japanese.
Where can I watch Sachiko Mamiya?
Open the Esper Mami page for licensed streaming links and the full episode list.