Printing paper

A printing paper includes a sheet having a first surface and a second surface, an adhesive layer formed on the second surface, a release paper attached to the adhesive layer, a plurality of boundary lines including first folding direction boundary lines and second folding direction boundary lines that divide the sheet into page regions, the release paper having a plurality of release-assist formation lines, wherein when folding along the first folding direction boundary line, first partial surfaces of adjacent page regions are brought together and when folding along the second folding direction line, second partial surfaces of adjacent page regions are brought together. When folding along the first folding direction boundary line, at least one tab portion of the release paper detaches from the adhesive layer and extends outward from the second surface, and the at least one tab portion enables removal of the release paper.