High-school student Asahi Kuromine is given the nickname "Leaky Basket" for his inability to keep secrets.

Asahi is determined to keep Yoko's secret, as her father has said that she would have to quit school if she were found out.

Mikan, the president of the school's newspaper club, presses Asahi for more information on the visit he made to Yoko's home.

Nagisa begs Asahi for help as her External Unit ran out of battery power and she was forced to come to him in her lilliputian form.

After discovering that UV rays from sunlight cause Yoko's skin to instantly tan, Nagisa decides to train her in the art of dodging sunlight on her way to school.

While returning home from the amusement park, Asahi and Yoko encounter a scary wolf man with fangs who Yoko recognizes as a childhood friend.