I actually have a headcanon post but I'll put it here. c:

✞ All clones within St. Kleio Academy study about their originals as well as learn their original's skills and what their original knew. They are expected to improve on these traits as well. Several of these bits of headcanon relate to that.

✞ Joan can speak fluent French, having been taught it since she was a child. In fact, to aid with her pronunciation and accent somewhat, Joan learned nothing but French for a good deal of her childhood. Her pronunciation and accent are both quite good still, though a native Frenchman will likely be able to tell it's not her native language if they really care to note such.

✞ Though her original didn't care much for using her sword, Joan is skilled in fencing and swordplay to fit the 'image' of Joan of Arc.

✞ Joan knows a good deal of French history, at least up until the time of Jeanne d'Arc's death. I like to think the school kept her updated on history however, even if I as her mun am a dullard on the subject.

✞ Clothing-wise...

✞ She's always seen in a skirt in the manga, save for the time she's shown in gym clothes. Her typical ensemble consists of knee-length or longer skirts, a blouse and a coat or sweater. In short, she often dresses like someone's secretary, her clothes often very plain cuts with few frills.

✞ This doesn't mean though that Joan doesn't like anything or absolutely abhors more girly things. She actually has a great interest in small adornments, such as a simple ruffle on the hem of a skirt or little bits of lace. Even if she dresses plain, you'll often catch some small girly adornment to her person - a barrette in her hair, a bow on her shoe, a small pin shaped like a duck on her lapel.

✞ Those extra touches sometimes show themselves off in her choice of socks too. She likes tights under her skirts in the winter and isn't opposed to wearing stripped ones at times, though it doesn't happen often.

✞ Sometimes, those girly frills? Just happen where you can't see 'em. Think on that a minute.

✞ Her pajamas are likewise very plain, typically the button up/pants combo or a shirt/pants combo.

✞ Aside from her skills thought necessary to her being Jeanne's clone, Joan takes on what some may consider to be hobbies related to Jeanne's upbringing. Joan sews and does some little knitting, though she isn't exactly fantastic at either of these.

✞ Her bedroom is almost entirely clean, rigid and bland, following the looks of her room at St. Kleio. Or it will be at first. I suspect gradually more personality will leak in, via decorations and books.

✞ Joan likes to read quite a bit, mostly classics. ... And romances. Shhh, that parts a secret though.