[Kouchaya (Ootsuka Kotora)] Hutago to Maou [Digital](2)
- Relation manga
- [Kouchaya (Ootsuka Kotora)] Kaichou wa Oboetenai! (Kaguya-sama wa Kokurasetai) [Digital]
- [Kouchaya (Ootsuka Kotora)] GERBERA (DARLING in the FRANXX) [English] [Lonely Hikikomori] [Digital]
- [Kouchaya (Ootsuka Kotora)] HEAVEN'S DRIVE (Fate/Grand Order) [Digital]
- [Kouchaya (Ootsuka Kotora)] HEAVEN'S DRIVE 4 (Fate/Grand Order)
- [Kouchaya (Ohtsuka Kotora)] BLACK DIAMOND 2 (Gundam 00) [Chinese] [灰羽社汉化组]
- [Kouchaya (Ootsuka Kotora)] HEAVEN'S DRIVE 5 (Fate/Grand Order) [Chinese] [空気系☆漢化]
- [Kouchaya (Ootsuka Kotora)] Hutago to Maou [Digital]
- [Ootsuka Kotora] Lespedeza (COMIC Megastore 2011-05) [Chinese]