@Clear Everyone are supposed to go in the same school (which I probably should have specified, sorry about that) so that they somewhat know of each other and can ask for a ride from anyone. The test of courage is supposed to be a school tradition for the students (which usually is the case in media, which is why I probably assumed everyone would understand that they had to be in the same school), and those who knows about it tries to collect as many people as possible and then they go to the scariest place they can find to laugh at the people who are way too easily frightened. It would be quite odd for a complete stranger to show up for their test of courage without knowing a single person there and not be a student at their school.
My suggestion would be that you change your bio a little bit so that William just started school in an attempt to get closer to people his own age after his amnesia. He might not have gotten very close to his classmates and that might have been one of the reasons he decided to join the test of courage. Of course it can also be because he was curious about the rumors. (This is just a suggestion, if you have another idea in mind that could work, go for it.)
Also, this was meant to be brought up first in the IC, but since you wanted your character to look like William, I better say it now. It's the brown haired male that's William. The blonde haired man is Eric. He's in the middle as a barrier between William and Elizabeth since he was the one who came between them by spreading the rumors in an attempt to break them apart. So either you should change it to say that his appearance resembles Eric, or you should change his appearance. (Also, William and Elizabeth never got any surviving descendants, so his appearance being similar can only be a coincidence.)
Really good CS though, I like him ^^