Mitsuzuki - "Kashou no Tsuki" Gaiden

From Tasty Kiwi Scans:

Story 01 - There’s a tribe of hermaphroditic wildcat people, who, after their sixtieth birthday, can become male or female based on their partner. The main characters in this story are: a wildcat Kada about to enter its transformation period and its philanderer fiance Koryuu.

Story 02 - Lady Shaman returns, carrying a child. When Monkan learns she is pregnant, he has to decide whether to claim the child as his own or protect his position and honor by casting her aside.

Story 03 - Kagetsu and Arimasa have finally settled down, and are now raising one-year-old twins. However, Arimasa worries whether they will be able to live as humans with their demon blood. When the twins' powers begin to manifest, the new danger occurs.