Yōko Tamaoki is a Japanese voice actor from Tokyo, born on April 24. She was formerly affiliated with the talent agency Production Ace. Her documented career is primarily known for a single, distinctive role in the 2011 anime series Nichijou - My Ordinary Life. In the series, she provided the voice for the character Weboshi, also known as Ueboshii, a role she reprised for the series' OVA episode. For this character, she also performed the song Sudachi no Uta, which is featured in the anime.