Please ravish me until I get pregnant...

For the sake of his father who suddenly collapsed due to illness, Subaru Kanameishi (19), who was attending a cram school in Tokyo, gives up on his college entrance exams.

After over ten years, Subaru is recalled to the Kanameishi main family house, located in a region deep in the mountains. For the purpose of continuing the Kanameishi bloodline, the main family demands that he begin babymaking with his older female cousin Mana (36), who he had previously thought was his aunt.

In order to pay for his father's treatment, while still finding his bearings Subaru goes along with the demand being made of him...

(Source: DLsite)

Note: This is not a collection of oneshots but a single storyline with titled chapters.
Volume 1:

1. Saikai / Reunion
2. Kasareta Shigoto / An Imposed Job
3. Natsu no Yoru no Yume / A Summer Night's Dream
4. Mana-san to Okaimono / Shopping with Mana-san
5. Yokubou Aorarete... / Fueled by Desire...
6. Susuki-chan Uzuku
7. Yugandeiru Mura
8. Watayama Mura no Kako
9. Saigo Kamo Shirenaikara...