Hi youmu
welcome to Place,anyways...
refer to this when making your character
http://place.niceboards.org/diplomacy-f6/the-escape-t173.htmYou're in a facility where they are testing on you and your comrades for your powers,so a
sword would most likely get taken away and stored somewhere.Somewhat like in jail where they put your belongings somewhere safe then when you're released they hand them back,though in this case you might have to steal it back.
Using the history of a touhou character is abit odd,but well aside from that if your character does not remember their past maybe you should leave that spot blank until you can make one that would make abit more sense and pertain to the universe of "The Escape" instead of Gensokyo.The age is fine but the whole backstory is that children got taken away from their families for their super powers,not that they took someone who is 6 times older than the rest of the prisoners.
So just kindly leave the history blank or make one of your own and change the age to 10.
If you need anymore help with making a history for your character maybe I'll be glad to help =w=b