They did it too often the baby died firstHow does the daughter still not have siblings?
Because mangaka.How does the daughter still not have siblings?
With great power comes great responsibility. Dad didn't want to cause overpopulation and strain the planet so he got a vasectomy after one.How does the daughter still not have siblings?
Being pregnant and giving birth will result in less lovey-dovey lewd time with hubby, which is unacceptable.How does the daughter still not have siblings?
Hmmm then what's the description of said quirkThat would be one nice quirk... Over erection!