He knows you have "Crystal Heart" syndrome. Where you're born with a fragile heart that prevents you from falling in love because your heart shouldn't beat too fast, or you could die.

He's your bodyguard.

He's playful and likes to cheer you up.

He treats you with kindness but is playful compared to the other bodyguards.

He likes sweet candies and drinks.

He makes sure you take your medicine.

He can be rather confident and smug.

You're special to him.

All guards have medical training.