Also known as: 薄井幸子
A main character in Mount Celeb Kaneda-San.
Sachiko is one of Mochiko's classmates. A normal, sensible girl and the class rep. She is a frequent target of Mochiko’s outrageous wealth-flexing habits.
She often plays the role of the "straight-man", unamused by Mochiko's bragging and over-the-top schemes.
She's a plain girl with long Black Hair styled in a pair of Twin Braids with Blunt Bangs. She sports a pair of round Glasses. Unlike Mochiko, she has a very "slight" figure.
Usui Sachio is her little brother.