Dragon Quest: Dai no Daibōken, is an original manga based in the fantasy world of the video game series Dragon Quest. It was originally created as a two-chapter short story titled "Derupa! Iruiru!". Its subsequent success led to the three-chapter sequel "Dai Bakuhatsu!!!", and later the serialization of Dai no Daibōken in Weekly Shōnen Jump. The manga later spawned an anime series, which would be the second one based on the Dragon Quest franchise, Dragon Quest: Yuusha Abel Densetsu, being the first. Dragon Quest: Dai no Daibōken is one of the Weekly Shōnen Jump's best-selling manga series of all time, with roughly 40 million copies sold.