It is Ui`s sixteenth birthday, and Hayato just suddenly hears about it from her mother, and he thinks of a gift to buy her. Just then, Sawatari visits, returning the panties she borrowed, and a gift-wrapped parcel containing a see-through nightie, saying that she heard about his cross-dressing fetish from Rin. He leaves the packages at the entrance to their apartment as he goes to do the laundry. Ui opens the package believes the nightie to be his gift for her birthday, and immediately wears it, much to Hayato`s shock, and he orders her to change out of it as it`s only lunch time, and Ui realises just how revealing the nightie really is. However she remembers her mother saying that if a man gives a woman clothes it`s so that he can take them off. Later, Hayato takes an afternoon nap, and wakes up to find Ui sleeping next to him. She then pounces on him, and they have a torrid kiss, and he ends up using his fingers to stimulate her to the point of orgasm. She later says that she was just happy to have spent the entire day with him.