Staying up all night was nothing knew for Soojung and Sohyun knew that. When Sohyun watched her younger sister trudge through their apartment early in the morning, she already made the assumption that Soojung had stayed up the entire night. Soojung was never a morning person and perhaps, she never would be. 

Of course, Soojung was never going to pass up her daily morning coffee. That was all she could rely on, really. As usual, the exhausted girl stopped by her favorite coffee shop to grab her typcial iced triple shot before making her way to school and thankfully, there was no one to annoy her this morning. 

Felix frowned as he noticed his best friend enter the classroom, half asleep. The girl was practically walking dead. Sitting down beside him, she threw her body onto the desk, burying her face in her arms. Felix knew the routine; he was going to have to wake her up when the ten minutes are up. 

Why did she have to do this to herself? It really did break Felix's heart seeing her push her limits. Soojung was too much of a perfectionist that it just couldn't be helped. And so, for the rest of the school day, Soojung continuously struggled keeping herself awake. There wasn't even a test today; Felix honestly didn't even understand why she stayed up so late. Even during their lunch break, Soojung chose to nap instead of eating a meal.

"Hey, Jungie, do you want to hang out today? You've been overworking yourself so much, I'll treat you, alright?" Felix asked with a concerned expression. His frown remained as he watched her shake her head, denying his offer. "Sorry, I can't today. I'm behind on my studies and I'm starting to tutor someone today."

The boy raised his eyebrow in confusion. Tutor? Since when did Soojung begin tutoring someone? Soojung could read the confused look on his face and figured he deserved an explanation. Lately, she has been so busy that she forgot to tell her best friend about her crazy encounter with NCT 127. "Long story short, I ran into the members of NCT 127 many, many times and I told Mark I would tutor him."

Felix's eyes widened as he couldn't believe the words that just left . Did she just say what he thought he heard her say? "NCT?! What-" The girl didn't hesitate to flash a glare at the latter as she slapped her hand over his mouth. "Can you not talk so loud? Now calm the down. I kept running into them and I found out that they live in my apartment complex. I talked to some of them for a bit and I just somehow agreed to tutor Mark, alright?"

"How did they even get that idea though? And why you? Also, I thought you always turned people down for tutoring." The male crossed his arms as he questioned the gir