This is issue #25 of Otona no Kagaku ("Science for adults") magazine, featuring a fun little comic strip about virus transmission (topical!) and plenty of camera information- plus, of course, the famous Gakkenflex 35mm TLR kit, complete and unassembled. If you can read Japanese, you might get a kick out of the magazine; if not, you can always just assemble the camera and have fun with that.