Friendly Rivalry

선의의 경쟁 · Song Chae-yoon (story & art) · Daewon C.I.

Top student Woo Seul-gi fought her way into the elite Chaehwa High; Yoo Jae-yi was born at the top. Their rivalry begins as friendly — then curdles into obsession, secrets and survival. The razor-sharp school thriller that inspired the 2025 live-action drama.