"Do you understand now?" Myungsoo asked Jinah as soon as he finished the lesson. She slightly pouted and tapped her chin. "I think I got it already.." He raised an eyebrow and turned his face to her. "You're not sure?" "Well... I don't know. But I guess I got some of it." She quickly stood up and took her book. "Thanks for the time Myungsoo!" And with that, she quickly went out of his room with a really loud thudding heart.   She held her chest and tried to breath in and out. *Wow.. This is like the second time he taught me about Math. But... But something's wrong with me..* She shook her head and quickly ran to her room. She shut the door, threw her book on her study table and quickly jumped on her bed. She hugged three pillows and shut her eyes.       Flashback: "Are you listening Jinah?" Myungsoo asked as he noticed her just looking straight on his eyes. "Huh?" She blinked and sat up straight. "Ah.. Y-Yeah.." He gave her a weird look and continued on his lesson.   "With xmxn, how many times will you end up multiplying "x"? Answer: first "m" times, then by another "n" times, for a total of "m+n" times....... Jinah!" He called her again when he noticed her not focusing again. "Are you really listening?" "Aish!" She slapped her face and looked away from him. "I..I'm getting distracted." "By what?" He asked with a raised eyebrow. "Huh?" She asked and looked at him. *Did I say that loud?* He gave her a look. "Will you focus