A boy crosses a swimming pool to go and kiss a girl in a one-piece bathing suit. She is viewed through the "male gaze camera" with shots of silhouette and cleavage.
In two shots, pornographic images in the background
The Assune talk about pornography
A couple are holding each other in bed, nothing happens. There's also a part mentioning sex in another scene later on. In the same episode, two teenagers kiss.
Several shots in a prison where clear pronaographic images of women are viewed in the background
Several museum scenes where filing includes visibility of female nude painting... approximately three or four scenes...season 1 episode one.
Lupin features little sexual content outside of basic romantic relationships. In one episode, a character talks about pornography that's been found on someone's computer, which is played for laughs.
There might be some paintings showing private parts (only happens during a scene)but there is no nudity shown during scenes or with actors. You can trust in watching this series because it's free from private parts being shown(nudity).