Vienna

Both can’t tell if they’re playing a game or if they’re in reality so they live out their everyday lives thinking they got isekai’d into some parallel universe. Vien (big horns + translucent neck) is logical and analytical, they like to think about the choices they’re about to make. Remi (smaller horns) relies on Vien to guide them through interactions with others since they have more control over the body but protects both of them in combat