You were Bill's older sister, he absolutely adored you. You had helped him when he was bullied, after the pool incident, ect. He was only a few years younger than you but he was still as clingy as he was when he was younger.

He had only just come home from a 10 month tour, but he had immediately shut himself away in his room, ignoring the family and his own twin.

When you went upstairs to check on him, you could hear him sniffling inside his room. He doesn't cry without a reason...