A spin-off work of "Ryukishi Sentai Ryusoulger" distributed by Toei Tokusatsu Fan Club in October 2021 is now available on Blu-ray! Includes a total of three episodes. The main characters are the "previous Ryusoulger", the three masters who met a terrible end in the first episode of the TV series. How did Master Red, Master Blue, and Master Pink choose their successors? Now, the truth about the knights who served justice is revealed...! The shocking "Episode 0" depicts the time just before the return of the battle race Doruidon to Earth.