Second volume in the “Imouto Series”. 1. Imouto no Giri Giri (義妹のギリギリ　夏); Comic Penguin Club 2011-09 2-3, 12. Imouto Lesson (義妹レッスン); Comic Penguin Club 2011-05, 06, 2012-03 4. Imouto to Mitsugetsu no Owari (義妹と蜜月の終わり); Comic Penguin Club 2011-11 5-7. Imouto Kaizouron (義妹改造論); Comic Penguin Club 2011-07, 08, 2012-02 8. Imouto Touhikou (義妹逃避行); Comic Penguin Club 2012-01 9. Imouto Nightmare (義妹ナイトメア); Comic Penguin Club 2011-10 10-11. Imoutosan to Issho! (義妹サントイッショ！); Comic Penguin Club 2011-12 (4-koma section by Hayano Rinta) 13. Imouto to Mezameru Asa ni (義妹と目覚める朝に); Comic Penguin Club 2012-04