I get curious about ratings conversations all the time, so here's how I break it down: sexual content in an anime like 'Naruto' is evaluated by the same logic most rating boards use — intensity, context, frequency, and whether it's explicit or incidental. Mild fanservice (brief suggestive camera angles, accidental wardrobe malfunctions, comedic nudity) usually stays on the softer end and often leads to a TV-14 or PG-13-type advisory in Western systems. More explicit nudity or prolonged erotic scenes would push a show into stricter territory, but 'Naruto' generally avoids that level of content.
Different places treat things differently. In Japan the broadcast and film regulators are more permissive about certain visual jokes, while in the US the TV Parental Guidelines, the MPAA for movies, and streaming platforms each add their own disclaimers and age gates. That means the same episode might air uncut late-night in Japan, be slightly edited for daytime TV elsewhere, and show a content warning on streaming platforms. For me, the ratings are mostly a practical tool — they protect younger viewers and help parents decide — and with 'Naruto' the sexual bits usually don't dominate the show, so the rating tends to reflect the mix of action, violence, and occasional fanservice rather than explicit adult content. I still enjoy watching the series with that context in mind, and it rarely feels like the sexual content defines it.