Prelude: Red Tile-Roof Part 2 (서막 ㅡ 붉은 기와 제 2장, Seomag ㅡ Eubulg-eun Giwa Je 2jang) is Chapter 0.2 of the Twelve Nights manwha.
Synopsis
Seol Hwa, the daughter of Wol Young Hwa, finds Yi Hwi and Yi Jeok. Young Hwa then decides to test Yi Jeok to end Yi Hwi's life, but proves to her that he would sacrifice his life to save Yi Hwi. Eventually, Young Hwa saves and keeps the two boys.