One day, a mistaken email arrives from a woman named “Akane”. The email triggered her to have a relationship with her that made her feel nostalgic somewhere. A few days later, she reunites with Akane on her way home from shopping with her mother, Tomoe, but there is a figure of Tomoe staring at Akane and making her face stronger. This was a reunion between “mothers”. “Mother of raising, Tomoe” “Mother of birth, Akane” They are twins. In fact, they devoured the ripe and disturbed breasts of their two mothers, as if to push the facts in front of them.