In 1931 he published Mascando goma de estrellas (Chewing gum for stars) (silly poems), highly rated by critics.
Already employing the aesthetics of surrealism he wrote his mature poems Del amor violento (Of violent love) (1933) and Hip of insomnia (1935), in this genre, also following a neopopularist vein.
In 1930 Seral y Casas brought out the literary journal Cierzo and two years later its successor, the main vehicle for the concerns of the leading Aragonese characters, founding Noreste (1932-1936) in collaboration with Ildefonso Manuel Gil.
Seral y Casas is also noted as an editor and gallery owner, founding libraries that were established as both spaces where advanced paintings were disseminated as well as where artists gathered in Zaragoza, Madrid and Paris.
His editorial Clan published, among others, Violento Idílico (Violent Idyllic) (1949) by the surrealist poet Miguel Labordeta.