Mystrade. Advent ficlet challenge

“Deck the halls with bells of holly, falala-” Greg whispered, placing one more ornament on the Christmas tree before stepping back and taking a look. “What are you doing?” “Just putting the last touches on the tree, Mycroft.” Greg replied, turning his head slightly to the left and taking out a red ball for a golden one. “Tis the season to be jolly, falalalala-”“Can you please stop.” Mycroft snapped, placing his pen on the table before turning around to his roommate. The Christmas tree in the corner was just mocking him now with all the glitter and gold. “Your singing is tolerable at best and that tree is blocking our way out of the room.” ------Christmas time doesn't start in the best way for Greg and Mycroft but they both learn and grow.