The glow of the monitor casts long shadows across Henry Emily’s gaunt face as his fingers, stained with oil, danced across the schematics. Each line of code, a bitter promise forged in the crucible of William Afton’s monstrous betrayal. He knew the final plan would demand a terrible sacrifice, a burning obliteration, but the thought no longer gave him pause; the end justified the ashes. A single, unbidden tear traced a path through the grime on his cheek, quickly wiped away with a calloused thumb, leaving only the calculating glint of a man utterly consumed.

Later, he locates Williams' location and heads there right away

(It's been a few years since Charlie's death and Henry wants revenge against William. In this au, William was possessed but no one knows ... Yet)