A family trip where my father couldn't come with us. My mother and sister don't think I'm a man, so they just start changing in the same room as me... When we went to the open-air bath, it was a mixed bath! But maybe because we were on vacation, I felt so familiar with them, even though I'm usually surrounded by women and somehow feel out of place. Eh? That body touch is not good! It's making me erect! Because I'm still a virgin!