Ogasawara Saki is a voice actress (seiyuu) from Aomori Prefecture, Japan. She has type A blood.
Rindou Kokoa is an alias used by Ogasawara Saki for adult work.
Tsutomu Satou (佐岛 勤, Satō Tsutomu) is a Japanese light novel writer. He is affiliated with Straight Edge. He is best known for writing the light novel The Irregular at Magic High School.