Let's start with the fact that in principle I am not against incest, but as always there is a but.
Firstly, it is unconditionally the absolute consent of both parties, and moreover, if it is incest between a parent and a child or an uncle and a nephew, the child must have the age of consent of their country and must absolutely not depend on his parent, apartment, work, good mental condition and no disabilities only then can they afford sex or love or both. With a brother and sister, it’s a little easier this is the age of consent of both parties and no dependencies on each other, for example, if one has a disability, and it doesn’t matter physical or psychological and he depends on his brother or sister, then this is not possible, if there are no above restrictions, then no problem. Even without age of consent is possible, as long as both siblings are the same age, i.e. they are both below the age of consent, especially if we take countries with absurdly high age of consent like 21 years. But all this taking into account that such people will not have children. If children enter the equation, I am a categorical opponent of incest. Although the chance is small, but to know that it exists and still doom the child to a possible disease, such a thing. Now, of course, you can go and trick the child's genes so that he is born healthy, but at the time of writing this comment, such a procedure is illegal in all countries of the world, at least in all civilized ones. And I understand why this is so, but I really hope that soon, genetic operations will be legalized, at least in cases where it is necessary to cure a child from an illness.
So actually the game is generally super, I liked it, but the child at the end, of course, made me a little worse impression of the game.