ZUKO-096 An extremely serious family is too earnest about sex to have a kid

You came to Tokyo to take the entrance exam. A relative's house that is a little difficult to stay. The reason why I'm not good at it is because the four sisters in this house are not half-heartedly "damn serious". Knowing that you are going to take the exam is a big deal, and as a matter of course, they will start cheering you "wrongly" with all their might. If it's cold, warm up naked, come to wash your body in the bath after all, collect all the sperm for concentration ... All the best cheering this time has passed, there is no doubt that you will pass.