This is probably the sweetest most adorable romance anime I have ever seen. Very clean, definitely suitable for all ages. A beautiful story of friendship and early romance.

Note: This anime has been licensed for distribution by NIS America. There will be no dub, only English subtitles.

Violence/Gore - Very minimal comical violence, if any at all.

Nudity/Sexual Content - Nothing really. This is a romance anime, but it's about as sweet and innocent as you can get.
There is one misunderstanding about one character having a crush on a teacher, but it's only played for comedy.

Theo. Themes - Characters go to a shrine on New Years. There they ring bells and bow to the shrine, as it is a Japanese tradition.

Other Themes - No swearing at all.

I would highly recommend this to people who enjoy romantic tales. This is a really sweet and gentle story. The art style is a little odd, but as I got into the story, I didn't notice it as much.
Very clean anime.
The only thing that I saw that might be troubling to some people is the presence of some talk about superstitions and curses and Eastern culture (shrines, fortunes, etc.).
Koronuma Sawako's attitude and gentle spirit could be a good role model.
The music was very pleasant and fitting.

Violence: Nothing really, except for one scene where a character is slapped.

Sex and Nudity: It is very, very clean in this regard, with the exception of a couple little things. A teacher tries to check out an adult video from the library (nothing inappropriate is shown), and a boy thinks about letting his arm graze a girl's chest (nothing happens). There was also a rumor about one of Sawako's friends being promiscuous (she isn't, the rumor is just based on her physical appearance rather than her character). The rumor is worded in a way that younger kids wouldn't be able to pick up on it.

Theological Themes: They pray at a shrine in one episode and get their fortunes told. There are lots of misunderstandings about Sawako being cursed and having supernatural powers.

Problematic Themes: None. There is no swearing or substances.

Overall: I really liked it! It was so cute and wholesome! I have never shipped a couple as much as I shipped Kazehaya and Sawako.

I personally loved the way they handled drama and relationships in Kimi ni Todoke. The way people treated each other, for better and for worse, seemed like something that could happen in a real high school. The behavior exhibited in Kurumi's backstory is behavior I have seen first hand. It just seemed very realistic. A lot of people criticize Kimi ni Todoke for being very slow in developing the relationship between the two leads, but it didn't bother me in the slightest. In fact, I felt as though it added to the realism. Perhaps because I would have behaved similarly to Sawako were I in her shoes. I loved how they showed a character break off a relationship because the situation was getting abusive. That was something I didn't expect, and I'm glad they included it. So much media romanticizes these relationships and I was grateful Kimi ni Todoke is taking a stand against it.

Sawako's development is lovely, and I admire her for her unfaltering kindness. She's one of the most wholesome anime characters who I have ever come across. Her friends are absolutely entertaining and balance out Sawako's never ending cuteness. Ayane is more mature and has a bit of a mischievous streak, and Chizuru is loud, brash, and emotional. Her love interest, Kazehaya is another absolute ray of sunshine. Ryu, Chizuru and Kazehaya's friend, is very stoic and kind of clueless. Finally, we have Kurumi, who is a very accurate representation of a jealous, two-faced, teenage girl. I didn't dislike any of them, even Kurumi (I did at first, but I changed my mind after seeing a bit more of her). Characters are definitely a strong point.

Unfortunately, the animation is rather bad. I have no issue with the character design and the art style. It's just the characters are mainly in the deformed chibi state for most of the early episodes, with the exception of Sawako and Kazehaya. It was very difficult for me to believe that Sawako was creepy when she was one of very few characters drawn with any effort. Everyone looks really nice when they're drawn normally, and I am glad they put more effort into the later episodes. It did not stop me from loving this anime, though.

I'd recommend it to preteens and up. There's nothing to stop older children from watching it, though they might not be interested.