Straight answer
Candy Shorts lives on an adults-only platform, and explicitness is decided series by series. Candy gives no rating per episode, so some titles stay mostly at dialogue and others go further. Titles on the Spicy shelf are labelled adult content by Candy and are padlocked for logged-out visitors.
Nudity in the free episodes
Same answer: it depends on the title. Episode 1 of any standard series opens with no account, so a series can be judged before any token is spent.
Explicit, uncensored, NSFW?
Candy itself uses none of those words: its own labels are an 18+ age limit for the whole platform and an adult-content tag on the Spicy shelf. This guide marks those 16 titles with a padlock and shows no preview clip for them.
See also: is Candy Shorts porn?
