FROZEN CANONICITY : A FROZEN HEART BOOK
Except for the Conceal Don't Feel Twisted tale, I like to consider all Frozen books canon to a certain extent, especially the ones for older readers.
Though we know for certains the F2 themed novels were approved by the creators, A Frozen Heart, which not only was the first adult novel to be published about Frozen but also one of the only media tackling Hans' character, doesn't seem to have had the same treatment, despite some of its events being referenced in Polar Nights and All is Found (I believe I read somewhere the filmakers didn't know about the book, correct me if I'm wrong).
But some things seem to contradict the "official" canon material, which I'll try to debunk as best as I can.
A Frozen Heart mentions Hans being 17 when Anna is 15, meaning he would be around 21 (depending the time of year he was born) during the coronation:
Yet, in a tweet published not long after the release of F1, Jennifer Lee revealed the age of Hans:
... Or did she? She said "I THINK he's 23", not "he is 23", like the way she affirmed Anna and Elsa's birthdays for example. It was never something the filmakers really thought about, except that Hans was in his twenties. Also, her answer is kind of humorous.
2) Kai's contradicting personality
One detail I saw no one mentioning was the portraying of Kai in A Frozen Heart VS Dangerous Secrets. Sure, he's not such a deep character, yet the two books seem to clash about Kai's perception of commoners marrying into royalty, and of love stories in general:
Kinda hard to find a logical explanation for this one. Did Kai change his mind afterwards? Why would he approve of Iduna but make clear for Anna he disapproves mixed marriages? I still find kind of ironic that Elizabeth Rutnick insists on "Kai wouldn't know a great love story if he saw one" because he saw Agduna right away! Also I like the idea of Kai seeming uptight at first glance but being so human and romantic and supportive inside. Could also be Anna misinterpreting Kai's reaction because she believes to be the only one to understand love lol.
Speaking of Anna's perceptions...
3) Hans' eye color (+Sitron)
We can all agree Hans is a redhead with green eyes, and Sitron is a Fjord horse cream colored:
But here's how Anna sees them in A Frozen Heart:
But let's remember Anna lives in the perfect fairy tale dream - so she only sees what she wants to see. She can't even remember Hans' eyes when Kristoff interrogates her! She's just picturing the eprfect prince charming with a white steed.
4) Iduna and Agnarr leaving period
We all know the tragic "See you in two weeks!" Anna says to her parents before they leave for the Dark Sea.
Yet in A Frozen Heart, it's more of a whole month:
I guess she isn't talking about her parents' departure then? But about the delay Gerda gave her to clean her room? Or until her 15th birthday? Can't really explain this one either, except a typing error.
A Frozen Heart suggests the ballroom has a balcony on which Anna and Hans eat krumkakes before singing "Love is an Open Door". I debunked in a previous post how this balcony can't be located in the ballroom since it's clearly not on the ground floor. This Arendelle castle plan from A Frozen World confirms it:
And yet again, in a Frozen Heart:
Let's say this balcony is "a few feet away" but vertically! So not really the direct ballroom balcony.
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So? Is A Frozen Heart canon or not? I'll say apart from these inconcistencies I'll go for a YES - all elements that don't directly contradict official material is canon for me, filmakers approval or not.