Ore to Okaasan no Haramase Sukinshippu | 俺とお母さんの孕ませスキンシップ

A house of Protagonist which is the branch family of a old family. By an old custom, mother have to make one more child. Protagonist that holds feelings more than the blood relationship in mother, it dreamt that i inseminate mother.

Such an inside, father will go away on business, mother hides herself in the room of Protagonist at night. "Though the person in question doesnt actually know, fathers sperm decreases by cannot the natural pregnancy due to serious illness several years ago. Therefore, i want you to conceive me instead of father." Mother, it said so.

Each others thought occurred at the same time, the desire of Protagonist explodes.