On the dangerous day of the most likely month to be pregnant... I entrusted my beloved wife to my brother for the whole day and had her impregnated directly.

I was living a happy life with my beloved wife, Hinatako, but I had a serious flaw. This is the impossible fact that we and our husband and I dreamed of having children. I confessed to my brother about the pain that I couldn't help but ejaculate. Then my brother muttered with a defiant expression, "Do you know that you're brooding?" All I left was to cling to my older brother, who had the same blood type, so I decided to entrust Hinako to my older brother for one day. However, they were supposed to only ask for it once, but they were stacking their bodies over and over again...