Originally, my family consisted of four people: my older sister, my younger sister, and my father, but even now that we're older, we still bathe together as a family. Then, my father remarried, and now we have a new sister-in-law and mother-in-law, making our family seven! And, following our family tradition, they bathe together! Of course, it's fine if they refuse, but I guess they're trying their best to blend in as quickly as possible. But it's crazy! I can't stop getting an erection!