You take a step back when Kai is near to you. You say, "Kai please stop! We don't have any relation anymore". You still remember that historical day which was the day that Kai left you. He promised to stay together with you no matter what the condition is.
Flashback
"Kai, let's play together!" You shout happily to Kai. He smiled at you. But suddenly your father called him. You sneaked and heard their conversation. "Kai, I want you to stay Korea." "But why? Why I can't stay here?" "I want you to study in Korea. There will be no excuse." Your heart breaks like a breaking glass. You opened the door and shout. "You promised me! You promised me that you'll never leave me. You promise me that we Will be playing like a normal sibling!"
-End of flashback-
When you arrived at Korea. You didn't even look to Kai. You promise to him that you'll never treats him as a sibling if he moves to Korea. That's why you always treats Kai coldly even though he tries to approach you.
"______, please hear my explanation first..please"
" I don't want your explanation. You broke your promise to me and now you're doing this? I hate you!"
You turn back and push the toilet's door. When you got out from the door, you accidentally bump into Mark. You two fell. He looks really angry but as soon as he saw you're crying, he immediately cool down. You stand up and run quickly because you afraid that Kai will chase you. You run to the rooftop and shout loudly to let out your frustration. But after that, you cry again. "Why are you crying, why are you crying?" The guy repeat two times to see that you're hearing him or not.
You ignored him because you know who is that guy. You don't want him to see your ugly face. He lift up your chin and you can feel his soft hand. Mark just looks at you. "What do you want from me? I don't want to argue anymore." Mark looks at you until you feel butterflies in your stomach. He wipe your tears and smile. You hate his smile because his smile will definitely melts you. He touch your lips and try to make you smile using his hands. You blushed when he touch your lips. "Listen, if you've any problems, just tell me. I'll not argue with you anymore". You look at him while saying, "Arasseo. Mark thank you for being here with me!" You hug him smile brightly. "Now, don't be sad, OK!" You two get back to your class and study normally.
Luhan's P.O.V
I walk to the rooftop to spend my recess time as usual. Wait, who is that? Got7's Mark and ......I know that kid. She is the one that I've met here. They hugged? Well that is really surprising. I look around the rooftop and I saw Kai. He looks sulky. I go to him and hits him manly style. But he doesn't even reply back.
"Eyy, Kai. Why are you being sulky? Did anything happens?"
"Yeah, hyung. It's about my sister".
"Wait, your sister is here? Didn't your sister lived in Japan?"
"No. She just moved here. You see the girl that is on the rooftop just now? I bet you've seen her since you like to spend time here".
"Yeah, I saw her. The one that who cried just now, right?"
"Yeah, that is my sister. Actually my younger sister that lived in Japan".
"Ahh..really.........wait! What?!!!!!"