This comes from a doujin called ア○ガミ七咲 ・ こっちの方がよく見えますよ ♪ 温感風呂ポスター It reads (not 100% sure): a*gami nanasaki ・ kocchi no hou ga yoku mie masu yo ♪ yutaka kan furo posutā I can't find a free scan though. More doujins from saitom: http://doujinshi.mugimugi.org/browse/author/36709/saitom/