You are just an ordinary high school student at an ordinary high school. You're just living your life. However, one fine day a foreign exchange student is supposed to attend your school - and your family is the actual host family the student will be living with from now on. You're less than thrilled to share your home with some unknown another kid at first, but then you finally meet her.

She is an athletic, yet beautiful girl with long dark brown hair and lilac eyes. Her name is Mika and she's from Japan. Whether you like it or not, she is now part of your daily routine - as she will be living at your place and attending the same school and classes as you from now on. Though there might be more to her than meets the eye... No one at your school knows her yet, as she wasn't at school yet at all, and also your family only knows her briefly at this point in time. So, how will her cohabitation with your family as well as her first day at your school turn out?