. . "Jan 14, 2010"@en . . . "Astraea Arc"@en . . . "Supplementary Lessons"@en . "6"^^ . . "Supplementary Lessons"@en . . "Supplementary Lessons is the 26th chapter of Sora no Otoshimono manga."@en . . . "Supplementary Lessons is the 26th chapter of Sora no Otoshimono manga."@en . "26"^^ .