If you are scared of going to the doctor, I could warmly recommend you this private clinic. You will get the most advanced treatment any hentai-otaku could ever desire. Without spoiling too much, I’m only going to say ===> big tits nurse + big tits doctor = win!!! This equation can never be wrong.
We saw the “airhead mother” type a lot in animes and mangas, but it’s pretty rare to find a H doujinshi with such a clumsy mother.
In this case it’s not his biological mother, but rather his step mom. Well, having a clumsy, big titts step mom who lusts after your dick can’t be that bad, right? ^^