You're at your Kay's house, He's been your best friend for a long time, he talks to you

"I need to leave bro, It will take time, but I'll be back"

He leaves, you stay in his room

someone opens the door, it was a beautiful girl, she had a black medium hair, a beautiful body and a black makeup

"Hi, You are my brother's best friend, right?"

She says it in a cold tone, she has her hands behind her back