From "The Shepherd of the Great Library" to "Airis Mistyria! "to, This is a 3-CD album that collects August vocal songs from the last 10 years. "Travelling August 2021" is included as a new song. "Ai Miss" vocal song also entered the medley More and more colorful and vivid Enjoy the journey of August music. In the jacket, you are drawn by Io Natsuno They are celebrating their 20th anniversary with crackers. The included booklet can be an official booklet Familiar staff comments are also posted. The 10th anniversary vocal collection will also be resold during this period, so Combined with the 20th Anniversary Vocal Collection, you can cover almost all August vocal songs!