This rating is due to the following content:
* Romantic comedy: The series features a lot of lighthearted romance and teasing between characters.
* Mild violence: There are some slapstick comedy moments and minor instances of physical aggression, but nothing overly graphic.
* Some suggestive content: The series may contain some suggestive scenes or dialogue related to romance, but it is not explicit.
Overall, Kaichou wa Maid-Sama! is a relatively light-hearted and humorous anime that is appropriate for teenagers and older audiences.