The story is set in a surreal, alternate-reality Japan where academic or professional success is secondary to reproductive output. In this world, sexual acts—specifically between sons and mothers—are not viewed as taboo but as the ultimate expression of love, respect, and "filial piety" . Key elements of this world-building include:
The keyword "Mama to Boku no Karada no Shikumi: Okaa-san ni Chitsunaishasei Shitara Oyakoukou na Sekai" (translated as The Mechanism of Mom's and My Body: A World Where Inseminating Your Mother is Filial Piety ) refers to a 2014 adult visual novel developed and published by the Japanese studio Venus . Mama to Boku no Karada no Shikumi Okaa-san ni C...
: Public sexual acts are commonplace, and society encourages insemination to combat declining birthrates. The story is set in a surreal, alternate-reality