There is some nudity, but it isn't erotic

There is some nudity by Jeon Do-yeon,
and a bed scene with Cho Yeo-jeong and Jo In-sung,
but Jeon Do-yeon's nudity is deeply connected to the theme of the movie,
and the bed scene between Cho Yeo-jeong and Jo In-sung
expresses Jo In-sung's dual nature,
so I didn't find either scene erotic at all.