[The moment they mention 'most precious person', his eyes narrow-- something others have called a look of a killer.]

Touch even one hair on her head and I will leave you in a condition that will make you wish I had killed you.

[An empty threat, but it's a definite automatic reaction from him. Whoever this is clearly knows how to press his buttons. However, he calms down, his expression back to normal.]

Fine. I'll play by your rules. What do you need me to do right now?