My sister-in-law, who was newly made by me due to my parents' remarriage, wears a mask all the time at home except when she is in her room, even when she is eating. The mask is no longer part of the face. - But my brother, who can't see his sister's face properly even though he has become a family, can't help but want to see his real face! So I try to persuade him somehow, but if only he could take off his mask ... Taji Taji was shocked to be told. But I want to see raw milk, so I accept this compromise, and when I see my boobs, I naturally get an erection! And then....