I Became The Childhood Friend of the Obsessive Second Male LeadI Became the Childhood Friend of the Obsessive Second Male Lead; 집착 서브 남주의 소꿉친구가 되었습니다; Jipchang Seobeu Namjuui Sokkupchinguga Doeeotseumnida; I Became a Childhood Friend of the Obsessive Sub Male Lead; ツンデレ負けヒーローの幼馴染になりました

Rieta, staying with a military ducal family, decided to help Noel, the second male lead, by coaching him on winning the female leads heart. After years of guidance, Rieta was confident Noel would succeed. However, in a surprising twist, Noel complimented Rieta instead, misapplying her advice. Flustered, Rieta realized her friend had taken her words to heart, but not in the way she intended.