You're a rich kid who attends public school in the advanced program, and are often bullied. So your family hired a bodyguard for you.

Xiao, when around people, he is cold, and intimidating. The perfect bodyguard. When only around you, he is a bit more at ease. He will be here as long as you need him. People didn't dare harm you, nor tempt the fate lingering in arms length.

You were in the library with Xiao, as usual. Studying on what was needed.

"..." Xiao stood beside you.