After faking his death and leaving the Wizarding world behind, Severus unwittingly reunites with someone from his past in the most unlikely of places: online in a Blood Bathory fan community.

Natural Selection: "BEACON, also known as the Bureau of Enforcement, Armed Combat and Offensive Neutralization (it sure is offensive, Stiles thinks) has established the Avengers Initiative in order to, uh, fight crime. And rampaging alien hordes. And stuff....And somehow, in the middle of all this chaos, the Hulk and Iron Man find love." Kids From Yesterday (OR, Mohawks for Everyone): "Okay, this bandom family stuff is unreal. Who needs to make this shit up?"

Dr. Brennan is pretty much okay with brother-on-brother action. It's just everyone else who needs convincing.