Sherlock sat on the bed next to Mycroft and stared at him for a half second, before closing the gap between their mouths, and brushing a delicate kiss onto his brother's lips. He pulled back almost immediately, a slight blush coloring his cheeks. Sherlock moved to get up, muttering something about heading to bed, when Mycroft laid a hand on his arm to stop him. Sherlock pivoted quickly, surprised at his brother's touch. Very softly Mycroft said, "You already are in bed."
11 parts