"5 more minutes to go" Krystal looked at her watch,  "Phew.... I thought I was going to get into trouble on my first day"      "Here's your card, Krystal shi" The librarian said, "You just have to rearrange the books and help people who have problem finding a book.... things like that"    "De..." she bowed politely and was about to head off to the book shelf when she heard the familiar voices.    "Noona, from which book-shelf should we start sorting?" a boy with milky white skin asked while the other two at the back were whining.    "You can start from the literature section, Suho ah" the librarian replied.    "Suho? The class president? Don't tell me it's them again" she murmured as she turned around to take a peep.   "Krystal?" Chanyeol said, looking at the girl who's peeping at them.    "Krystal? Where?" Kai followed his gaze.    She started to walk off fast before she got caught.        "Gosh, I thought I was gonna get cau---- Omo!" she exclaimed upon seeing Chanyeol and Kai in front of them.    "Krystal?"   She hung her head down in embarrassment and just let out an awkward laugh.   "Why're you avoiding us earlier?" Chanyeol questioned.   "Aniyayeo" she lied, "I thought it was another fanboy of Jessica unnie who knew me"    "Really?" he asked suspiciously.   "De.." she replied, still facing the floor.   "Yah, hyung! Why are you investigating her? You're not a police or something. If she said it isn't, then it isn't!" Kai rolled his eyes in frustration.   Then he turned to Krystal and smiled.   "Don't mind this hyung, Krystal ah. He's been reading lots of detective stories lately so I guess he got that suspecting-disease from them"   She chuckled at Kai's words.    "Neh~~"   "By the way, why're you here anyway?" Chanyeol asked curiously, "And alone?"   Just before Krystal could answer his question,   "Krystal shi, I've heard about you from Hyeri noona yesterday but I didn't know that you'll start today" Suho interrupted who has just reached where they're talking.    "Annyeonghaseyeo, Suho shi" she greeted politely.    "Annyeong Krys