Chapter 789

'Oh that's right. Corinne taught me a formula at Lucas' office last time. Yes, this all makes sense now,' thought Sunny. It was like he saw the answer revealed before his eyes. However, not wanting to let Corinne know she won, he simply muttered, "Hmph! I don't need you to teach me." Corinne did not mind his attitude. She put down the pen and said, "I'm going to the bathroom, and if you still haven't figured out the answer after I come back… Well, don't blame me for laughing at you then, Mister Sunny." After that, she went into the attached bathroom in Sunny's room. Sunny scoffed at the closed bathroom door one last time before turning his attention back to the math question. He tried to solve it by using the formula Corinne taught him last time when— Knock! Knock! Someone knocked twice on his door. A chill immediately ran up Sunny's spine as he thought it was Lucas who came to check on his homework. "Sunny, are you in there?" Sunny breathed a sigh of relief when he recognized t