it was a promo, the manwha has a girl and a saintess, the girl and the saintess got isekai'ed into a novel and they started speaking Korean and the saintess was a guy who was im his twenties, the girl was in high school, i think, that was all i can remember ╥﹏╥
it was a promo, the manwha has a girl and a saintess, the girl and the saintess got isekai'ed into a novel and they started speaking Korean and the saintess was a guy who was im his twenties, the girl was in high school, i think, that was all i can remember ╥﹏╥