Parts of a Whole

Spin-Off of #3 of Nekoka Danshi no Shitsukekata Series - main: Black Cat x Leopard
1. Kuroneko Kareshi no Asobikata
2. Kuroneko Kareshi no Amaekata
3. Kuroneko Kareshi no Nakasekata
4. Kuroneko Kareshi no Aishikata
5. Kuroneko Kareshi no Afurekata
6. Kuroneko to Kareshi to Ouji
7. Kuroneko Kareshi no Arukikata
- Fukigen Series (Side Story Kuroneko Series - has 2 parts) - Big Bro x Caretaker

Side-Stories of #4 of Nekoka Danshi no Shitsukekata Series
1. Fukigen kareshi no Nadamekata - (side story to 4.4)
2. Fukigen kareshi no Saraikata - (side story to 4.6)

1. Saiyuki
2. Saiyuki Gaiden - heaven, 500 years before Saiyuki
3. Saiyuki Reload
4. Saiyuki Reload Blast
5. Saiyuki Ibun - follows Priest Koumyou Sanzo in his days before inheriting the Sanzo title

1. Sayonara Game
2. Change World
3. Love Nest - spinoff

1. Shuuten Unknown
2. Shuuten Unknown Gaiden

1. [switch]
2. Switch - The Volume on Dragon Fruit

1. XXX Allergy
2. Secret XXX
3. Therapy Game - (spinoff about main couples siblings)

1. xxxHOLiC
2. xxxHOLiC Rei

1. Yume Musubi, Koi Musubi
2. Himegoto Asobi - (spin-off of 1)

1. Zettai Unmei Houteishiki
2. Tsumasaki ni Kiss - Spin-Off of 1 (Story of Big Bro)
3. Gravity Eyes - Spin-Off of 2 (Story of Host)