Free! 15 Days Challenge; Day 11

Hi everyone, I am so sorry for not posting this challenge daily, I guess I'm just being a lazy butt to do them and I am also so excited about Dive in to the Future in 2 days, I can't believe it *crying* But I'm going to post the days I've missed separely so I apologize beforehand with some spam ^^

Day 11; Something you wish you knew more about?

Hmm.. I'm not sure actually, but now that I think about it, I kind of wanted to know more about the river accident Haru had as when he was younger, I just ed I read something about and got curious about it. Does anyone knows more about it?