Sixth book in the “Imouto Series”.

1. Imouto wa Bukiyou (義妹は不器用); Comic Penguin Club 2015-11
   
2. Imouto Drive (義妹ドライブ); Comic Penguin Club 2016-04
   
3. Imouto Sabotage (義妹サボダージュ); Comic Penguin Club 2016-06
   
4. Imouto Nidome no Nidone (義妹二度目の二度寝); Comic Penguin Club 2016-07
   
5. Imouto Mermaid (義妹マーメイド); Comic Penguin Club 2015-10
   
6. Imouto Suiminbusoku (義妹睡眠不足); Comic Penguin Club 2016-02
   
7. Imouto Kitakubu (義妹帰宅部); Comic Penguin Club 2016-03
   
8. Imouto Mis-match (義妹ミスマッチ); Comic Penguin Club 2016-05
   
9. Imouto Kikan Genkaiten (義妹帰還限界点); Comic Penguin Club 2016-01