My childhood friend, Mitsuki, who lives next door, came over to cook me a meal while my parents were away on a trip. After finishing up, she tried to head home, but suddenly came rushing back, completely drenched. She had lost her house key and looked visibly distressed. Her wet hair clung to her skin, and her white blouse clung transparently to her body, revealing her lingerie underneath. With my parents gone, I couldn't resist the urge to help her. As I reached out to dry her hair, the moment changed everything between us.