Sakiko Togawa is a first-year student at Haneoka Girls' High School. She goes by the stage name Oblivionis and is the producer, composer and keyboardist of Ave Mujica.

She is a minor character in MyGO, however she does play a vital role in the show, on top of that, during the last episode, her band performs a song, so it will also be expected of Ave Mujica members to sing as well. Here is an example of her speaking. (turn on English subs for video!)