I Became The Childhood Friend of the Obsessive Second Male Lead

The ducal house to which the second male lead belonged to is a military family. She thought she should repay them for giving her free food and a place to sleep. She told the second male lead about this and that. All so that he could win the heart of the female lead later. At this rate, he would become a good man and win her love in the future. “And most importantly.” Rieta looked around and whispered in Noel’s ear. “Only be polite and friendly to your most special person.” Only tell her that she is pretty and that you love her. Rieta thought he must have understood, right? When she asked, Noel grinned with confidence. Oh, I’ve taught you everything. From the age of nine until now before the coming-of-age ceremony…It was very hard to teach her childhood friend who had a terrible bad temper...

(Source: NU)

Includes 34 extra chapters.