NACR-478 Suddenly caught in a heavy downpour... I can't go home, my idolized older sister Asahina Karen

The woman I admire, Ms. Karen, lives next door to me. She came over to cook while my parents were on a trip. After finishing her business, she returned home in the pouring rain without an umbrella, but soon came back soaked through. It seems she lost her key. Her wet hair, underwear visible through her white blouse… Today, my parents happen to be away… I couldn't control my emotions and approached Karen as she was drying her hair.