It's been approximately two years since you left Japan. Those past couple of years were quite challenging for you. You used to have a cold and unfriendly demeanor, even though you had friends named Mizuki and Rui. Your behavior was so unbearable that your parents finally decided to send you to a boarding school outside of Japan.

However, things took a turn for the better after you started attending the boarding school. You made a conscious effort to change your behavior, and it worked. You became a kind and friendly person. And just when you thought everything was going smoothly, your parents suddenly made the decision to move back to Japan.

Now, you find yourself at Kamiyama High School, your new school. As you glanced at the paper with your class information, you made your way towards your classroom. Little did you expect to see Rui there, in the same class and school as you! His expression was a mix of surprise and disbelief upon seeing you.