SOUBO KOUKAN NIKKI

1-3. Soubo Soukan (双母相姦); Comic Gucho Vol. 3, 5, 6, 7

4. Soubo Soukan after (双母相姦 after); Comic Gucho Vol. 10
   
5. Soubo Soukan EXTRA (双母相姦 EXTRA)
   
   6-8. Maki-san no Nikutai Keiyaku (真木さんの肉体契約,Maki's Coital Contract); Comic Gucho Vol. 13, 14, 15.
   
6. Toshi no sa Bitter End (年の差ビターエンド); Comic Gucho Vol. 1