Manga creator Yoshikazu Amami revealed on Twitter on September 4 that they will launch a Dragon Quest: Dai no Daibōken: Cross Blade (Dragon Quest: Adventure of Dai Cross Blade) manga in the November issue of Shueisha's Saikyō Jump magazine, which ships on October 1.
Riku Sanjō and Kôji Inada's Dragon Quest: The Adventure of Dai (Dragon Quest: Dai no Daibōken) manga is also inspiring a new manga in Shueisha's V Jump magazine, starting in the magazine's November issue on September 19. Sanjō is credited with the original work, and Yūsaku Shibata (Zipman!!, Yoakemono) is drawing the manga. The manga's story will center on the adventures of the character Avan before he meets Dai and his companions.
A new anime based on the original manga will premiere on October 3.
The original 37-volume manga ran in Shueisha's Weekly Shonen Jump magazine from 1989 to 1996. The manga previously inspired a 46-episode anime series that aired in 1991 and 1992, and three short anime films that opened in July 1991, March 1992, and July 1992.
In the story, after the defeat of the demon lord Hadlar, all of the monsters were unleashed from his evil will and moved to the island of Delmurin to live in peace. Dai is the only human living on the island. Having been raised by the kindly monster Brass, Dai's dream is to grow up to be a hero. He gets to become one when Hadlar is resurrected and the previous hero, Avan, comes to train Dai to help in the battle. But Hadlar, announcing that he now works for an even more powerful demon lord, comes to kill Avan. To save his students, Avan uses a Self-Sacrifice spell to attack, but is unable to defeat Hadlar. When it seems that Dai and Avan's other student Pop are doomed, a mark appears on Dai's forehead and he suddenly gains super powers and is able to fend off Hadlar. The two students then go off on a journey to avenge Avan and bring peace back to the world.
Source: Yoshikazu Amami's Twitter account