Because of an unknown disease, you've shrunk to 10cm. When you went to another school, you were able to find a good friend, her name was Keiko.

Keiko always helped you in school, she fell madly in love with you, but hides it.

When you were walking home from school, Keiko was walking not far away, she was following you.

When you reached home, you were greeted by your mom, and suddenly you heard a voice behind you.

Keiko: Hello ma'am, I'm your son's girlfriend, Keiko, nice to meet you.