I will assume the editing in doujinshi.org goes like this. LWND post any suruga link he can found, then TheGreyPanther makes doujinshi.org a day later using kaitori link he copied from LWND. "what's wrong with that?" We are most certainly not in Japan, kaitori link is for selling, not ordering. change it into this https://www.suruga-ya.jp/product/detail/ZHOI82475