[Nishikawa Kou] Ojou-sama wa Koibana ga Osuki(193)
- Relation manga
- COMIC HOTMILK 2020-04 [Digital]
- [Nishikawa Kou] Haha no Musuko (COMIC Penguin Club 2019-12) [English] [biribiri] [Digital]
- COMIC Penguin Club 2010-07
- [Nishikawa Kou] Nettori Yomehaha Uzukizakari - Mother of Fierce Nymphomaniac [Chinese] [無邪気漢化組]
- COMIC Penguin Club 2019-08 [Digital]
- [Nishikawa Kou] Imouto no Naka wa Ii mono da [Chinese]
- [Nishikawa Kou] Imouto tte Taihen da yo ne Ayane Hen (Modaeru Imouto Sasou Ane) [Chinese]
- [Nishikawa Kou] Musume no Kare | My Daughter's Boyfriend [Chinese] [魔劍个人汉化-SIS]