The first volume in the “Imouto Series” 1. Imouto wa Kayugari (義妹はかゆがり); Comic Penguin Club 2010-08 2. Imouto Control (義妹コントロール); Comic Penguin Club 2011-03 3. Imouto wa Samugari (義妹は寒がり); Comic Penguin Club 2010-05 4. Namaiki na Imouto (ナマイキな義妹); Comic Penguin Club 2010-06 5. Imouto mo Giri Giri (義妹のギリギリ); Comic Penguin Club 2010-07 6. Imouto wa Present (義妹はプレゼント); Comic Penguin Club 2010-09 7. Imouto wa Atsugari (義妹は暑がり); Comic Penguin Club 2010-10 8-9. Imouto Chuudoku (義妹チュー毒); Comic Penguin Club 2010-11, 12 10. Imouto to Asa made Nama... (義妹と朝まで生…); Comic Penguin Club 2011-01 11. Imouto ni Present (義妹にプレゼント); Comic Penguin Club 2011-02 12. Imouto wa Sore wo Gaman Dekinai (義妹はそれを我慢できない); Comic Penguin Club 2010-04