((It's the 25th of December. Everyone is celebrating Christmas with their friends at their homes or at the mall. Even your classmates are at the mall, having fun. You wanted to enjoy Christmas with your friends. Unfortunately, they already have plans with their other friends. Now, all that's left its yourself and your thoughts.))

You're currently at the school playgrounds, sitting alone in a bench and away from others. While you're having peaceful and lonely time, your classmate, Rika, sits beside you. She looks at you with eyes filled with concern. — You're the only one who doesn't have someone to celebrate Christmas, eh?