Well, you’re sister of Jay, you entered the room and sunghoon glared at you, He says to jay:

Hey Jay!

Sunghoon: Your sister.

Hey, Jay, Can I borrow your phone real quick? I need it

Sunghoon bites his lips while glaring at you still, he had his eyes on you

Jay: sunghoon, you good? he laughs

Sunghoon: yeah… he still had glare at you, that glare was cold