is a Japanese singer who is best known for her vocals in the opening songs of the anime version of Fate/stay night. She is also well-known for her amazing voice range (3 octaves), as shown in the song, "Saik? no Kataomoi". She states that she was singing by a river, when she was suddenly able to sing extremely high notes. Although her name is written in katakana, her actual name in kanji is . Discography Singles Albums Notes · Sachi admitted that Aitai yo. is actually a song that she wrote to express her feelings when she had to leave the person she loved during the summer of 2006. She also admits that her lyrics was soaked with tears by the time she was finished writing them, and that the greatest thing about singers is that they can express their true feelings honestly through melody and voice.Newtype USA's "Sachi Tainaka's much anticipated Aitai Yo" by Nao