|Voice Actor||Yukari Tamura|
Saku Tōyama (遠山 咲 Tōyama Saku) is one of the four members of Genius Four in the Tantei Opera Milky Holmes.
Saku is a soft-spoken girl.
- The name Saku means "blossom" (咲).
- Saku's surname Tōyama means "distant, far" (遠) (tō) and "mountain, hill" (山) (yama).
- Saku appears to have a thing for retro technology.
- Saku is usually seen wearing headphones and she is almost always seen with a lollipop in her mouth.