In this paper we read a novel Choe in hun`s “Square” (1960; 1961) as the Korean`s bildunsroman. Bildunsroman is an experimental novel on the potential of youth through the world of the novel`s problematic protagonist initiated to. “Square” is a bildungsroman that implemented Bildung as the potential virtues of modern civil society and its frustration. “Square” is a literary achievements that 4.19 civil revolution produced, it experiments project of Korean-style`s modernity with imaginative. Lee Myong Jun, a protagonist of “Square” criticized both South Korean society that only have closet but does not square and a North Korea that is the death of square. But fierce bildung`s will of Lee Myong Jun failed trying to against the world in the face of confrontation. Nevertheless, the failure of “Square” is a meaningful failure. “Square” is a critical fiction or fictional critics that criticize reality have frustrated implementation of the ideal of the youth.