Satoka lives in Nagasaki, on the southern island of Kyūshū. She is very well off, having a limo, butler, and a private jet, but states she's not that rich. She wears Satoru's hat and seems to always be with her. Unlike Touko's mask, she takes it off when needed. Satoka is still new to the Yume Tsukai, so she is receiving lessons from Rinko, who blasts at her to call her sempai.

~!Shy and timid Satoka joined the Yume Tsukai after her boyfriend, Satoru, another Yume Tsukai, was killed. She still carries the burden of his death, but later on finds the strength to carry on the title of Doyousei.!~

(Source: Wikipedia) 

An ordinary, quiet town is shaken by a series of bizarre happenings brought about by the darkness in human hearts. There are no solutions in the real world: Only "Dream Messengers" can find the answers. Dream messengers connect the fabulous with the real and control the power of dreams. Their leader, Touko Mishima, works with 8 other messengers using the powers given by an old spell and a toy made by Touko's father.
 
Touko, her younger sister Rinko, Hajime Tachibana, who loves young girls, and the six other Dream Messengers are given the names of days or stars - Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Raff and Keito.

When people dream, they express their utmost desires and emotions within the confines of their mind; but when their strong emotions cross the border into reality, the dream can turn into an uncontrollable nightmare. 
Touko and Rinko are sisters known as "yume tsukai" (dream users), and their job is to take care of these nightmares. Using toys as weapons, the girls must both destroy the nightmare and return the dream to its rightful owner before the nightmare does any sort of serious damage. 
Have no fear, Touko and Rinko are here! 
(Source: Anime-Planet)

[Profile](https://osawa-inc.co.jp/women/notomamiko/)

A Japanese actress, voice actress, and singer. She is married and has one kid.

**Non-anime roles:**
- Shinano - Azur Lane (VG)
- Emma - Goddess of Victory: Nikke (VG)
- Skirk - Genshin Impact (VG)
- Durandal - Honkai Impact 3rd (VG)
- Jun Kazama - Tekken series (VG)
- Mother - Avataro Sentai Donbrothers (Super Sentai) 
- Rella Melancoryphus Cygnus - Metaphor: ReFantazio (VG)
- Yi Xuan - Zenless Zone Zero (VG)

Satoka Sagawa