Human (Patreon)

Simon and Tommy had a complicated relationship as brothers. 

At a young age, Simon basically wrote himself off as a lost cause, and did the best he could to make sure at least Tommy had a chance to be a functioning human being. After all, Tommy was the gentler brother, the dreamer, the one who looked like their mother (who'd walked out on them years ago to escape their father). But Tommy got bitter, got sick of the one always being protected, being babied. He lost respect for Simon, for the way he wouldn't fight back, and in a twisted way, grew closer to his father as a way to learn how to be powerful, strong. It backfired, and Tommy got wrapped up in some bad business.

Simon's kid brother died while he was deployed. He got the news in the letter, and it broke him in a big way. In the story timeline, it was years and years ago but it still hurts like hell whenever Simon thinks about him.