In the early 20th century, when Japanese imperialists started to conquer the world, the Gasa literature failed to work properly, except the Naebanggasa. Especially the Ganghogasa, composed by Korean scholars, could not be maintained due to the arrival of the new style, free verse, from Western culture. After the year 1945, Gasa eventually disappeared from the Korean history since it was considered as an old form of literature in the new Korean education. Although the 20th century was a period of time in Korean history when the literature of Gasa and Ganghogasa declined, they were enjoyed through reading and writing till the middle of the 20th century. The reason for this was because literary works in the form of Gasatype, a printed book, and Naebanggasa had spread all over the country. After that period, the rural literature collapsed due to the rapid progress of industrialization, and finally ended up as a loss of enjoyment involving the Gasa literature, thus making of enjoyment disappear from rural literature and, Gasa just became by-products of the old Korean literature in history.
Nevertheless after the time of early 21th century, the Gasa literature and Ganghogasa have seemed to revive. Actually nowadays many pieces of work in the form of Gasa in 4.4 Jo or 4 Umbo with various topics are disseminating all over the country through the internet, and a new trend of life called Well-being also helps Gasa to revive. Since literatures written in the form of Gasa show the same topics with modern people‘s lives such as Sijibsari, sympathy between an old and modern people could produce a root of the new revival of Gasa literature. In addition, Well-being trend providing people more opportunities for contact with nature and expectancy about expression of nature based on the form of Gasa boost the restoration. Thus it is expected that Ganghogasa, also called Well-being Gasa, would play a role in Korean literature as a new modern trend.