The ninth volume in the “Imouto Series”.

1. Imouto Wrapping (義妹ラッピング); Comic Penguin Club 2018-10
   
   2-3. Imouto Anzen Shuukan (義妹安全週間); Comic Penguin Club 2018-12, 2019-01
   
2. Imouto to Okujou de (義妹と屋上で); Comic Penguin Club 2019-03
   
3. Imouto Athlete (義妹アスリート); Comic Penguin Club 2018-11
   
4. Imouto no Ikunuki (義妹のィきヌき); Comic Penguin Club 2019-02
   
5. Imouto to Yoru no Seikatsu (義妹と夜の生活); Comic Penguin Club 2018-06
   
6. Imouto Corner (義妹コーナー); Comic Penguin Club 2018-05
   
7. Imouto to Kurikaesu Natsu (義妹と繰り返す夏); Comic Penguin Club 2018-09