Another spicy concept: Any gender ShimadaSibling has been trying to get pregnant with their rando S/O for so long but it hasn't been working. Yandere Genji tells their sibling that it's because they're part dragon normal people can't impregnate them. And Genji offers to help his little sibling get pregnant with some one on one time. Sibling is originally hesitant but as time goes on they get restless and desperate. Finally they cave, and yandere!genji finally gets a taste (1/2)
of their little (lets say brother bc im a gay fucker) brother’s pussy. But alas, little brother isn’t pregnant! Oh no! Genji suggests they try again, saying it isn’t so bad the second time. Little brother already slept with him so how is this any worse? What the bro doesn’t know is that Genji’s been secretly spiking their sibling’s food with birth control so that he can keep fucking them. He’s convinced that once little sibling sees he’s a better lover and man, sibling with ditch the S/O [2/2]
I can imagine Yandere!Genji being so manipulative. “Aren’t you afraid they’ll leave you if you don’t get pregnant?” “We can keep it to ourselves, they don’t have to know, a baby’s a baby.” Even though Genji has zero intentions of allowing his baby brother to stay with his S/O. While little brother is thinking it over all he can think about is what Genji said about his S/O leaving him, and he really doesn’t want that so he gives in.
Little brother is very by the book about their first time (it makes him feel better). The whole lying on the bed with pillows under his ass (he saw it in some movie) Genji complies cause he doesn’t want to push him, even though later when lil brother is upset cause he’s not pregnant Yandere!Genji will insist that the best way to get pregnant is to have fun, enjoyable sex and lots of it. If he allows Genji to take the reigns next time he’ll show him how good it can be.
The more they fuck the less his little brother can hang around his S/O cause how is he supposed to explain the other man’s cum he’s carrying around inside his pussy? There’s only so many times he can remove his S/O’s hands or turn down sex before he starts getting suspicious. And once Genji’s sure that his little brother is seeking him out of his own volition does he stop slipping the birth control in his food.









