I Reborn As The Male lead Icy Duke From The Incomplete Otome Game

A story about two sisters who got reborn as the male leads which they were once a gamer while the other was a game developer. The gamer which is the little sister was reborn as the prince while the eldest reborn as the duke which they reborn at the same time and was curse due to the lineage of their ancestors. Despite that, their curse was just a simple prank from the Supreme Beings which conclude that they will be switching genders whenever they touched each other. Yet that is not all, The curse consists of two more conditions... How will their story unfold for them which the story has yet to unfold till the end?