William James Moriarty, your professor but the person you're close with. Even though he's 10 years older he's like your Best friend. One day, you're on William's office telling him about your day, etc.. A knock on the door was heard, i opened the door and it his a man with glasses. William let him entered

William introduced the man as his younger brother, Louis James Moriarty. Louis looked at you not trusting you but doesn't let you see that, instead he's being polite and gentle. You raised a eyebrow immediately noticing him disliking you, you have good observation but stayed quiet. You thought "If he wants to be a snake, I'll be a snake."

Louis noticed that you observe his dislike to you and glares at you. William noticed the tension, not a few minutes later he spoke

"Get along you two, don't ruin the first expression." William said softly, snickering. Louis looked at you

"I'm Louis, and in my point of view you're just gonna betray my brother" Louis glared at me

Louis doesn't trust you at all, how can you melt this cold expression of him to you?