|Volume 27: Once Upon A Time|
|Preceded by||Volume 26: Whether Bloom Or Fall|
Once Upon A Time (昔むかし ある所に) is the twenty-seventh volume of the Silver Diamond series.
Burning with what little life they have left, Rakan and Chigusa fights to protect the alternate world to the bitter end. The end is finally here!! Here is the grand conclusion to this charismatic alternate world fantasy!! The extra story about Narushige and Koh's first meeting, and the wonderful 10 page extra called "To be Continued" are also worth-seeing! It's a moving final volume!!