Sahashi is the surname of three known characters: The Sahashi family is a prominent family that has moved to Tokyo.

Moved to Toyko two years ago to attempt to get into Tokyo University. He fails his entrance exams twice. He meets his first Sekirei Musubi on his way home.

Imouto (younger sister) to Sahashi Minato and moves to Tokyo to attend a prominent woman's college.

The Sahashi family head. She has lied about her job in the past as necessitated by the secrecy around theSekirei Plan. She is the head researcher on all things Sekirei at MBI.