The paladins wanted to exchange presents for Christmas and they were excited to do so. When they went to the Space Mall they quickly picked something for everyone. It wasn't until they got back that they realize they all forgot to get something for one person. The same person.
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When Allura announced that they would be going to the space mall, everyone was understandably excited. They calculated that it would have been December on Earth even if they couldn't narrow down the exact date. They could celebrate Christmas whenever they wanted to though. They told Coran and Allura about the holiday and found out that they had a holiday much like it except it was on the opposite time of the year when it would have been around June on Earth; because of it, they opted to celebrate their holiday then and not Christmas with them. Although they were a bit disappointed, it was understandable that they would want to celebrate an Altean holiday.
As they searched through the stores it was easy to pick things out for each of the paladins, things on the shelf just reminded them of each other. By the time they got back to the Castle, they thought that they would be able to make each other's Christmases with no problems.
However, there was an identical factor between four of the paladins. They all forgot to buy for one of them.
They agreed that they would meet in the lounge after they were finished getting their gifts ready for each other. They couldn't wait an extra few days to do a Christmas morning and instead wanted to get it done and celebrate as quickly as possible. They agreed and split off to their own rooms.
As they wrapped their gifts, the realization came over them. They only had three gifts each to give to their teammates. They panicked slightly before realizing that the gift they forgot was for Lance. He wouldn't really mind, as long as he got something for somebody else and they said that they would get something for him later. He only really cared about the money that was spent on it anyway.
It didn't take them long before they were in the lounge with their piles waiting to start.
"Who wants to go first?" Shiro asked as he sat down. Pidge's hand immediately shot up earning a chuckled from the rest of them. They agreed and handed over her gifts. She ripped them open quickly, not surprised at the various computer junk that she expected from the team. She stopped when Lance cleared his throat and she looked over at him. He was holding out his present for her to take.
Lance handed her over two gifts though. She ripped open the smaller box first, not sure what Lance could have gotten her. She wasn't expecting much out of him though. Not until she unwrapped a brand new Nintendo 3DS. Her head whipped up to look at Lance in surprise.
"I found it in the Earth shop, thought you might want something you can carry around with you," he said with a smile, thoroughly enjoying the excited look on her face. She quickly ripped into the other package, revealing a stack of games including Pokémon, Legend of Zelda, Kirby, and others.
"Lance this is awesome, thanks!" She cheered hopping up and wrapping him in a hug. He laughed and squeezed her back before she plopped herself on the floor and started up the console. They figured that she was going to see how well it worked, when actually she was trying to distract herself from the painful squeezing in her stomach. Guilt came over her like a wave when she remembered that she hadn't picked anything out for Lance.
"Do you really like it?" Lance asked with a bashful smile directed towards her. She frantically nodded her head. He only smiled and turned his attention back to the group who was deciding who would get their gifts next. Finally, Keith huffed and just pointed to Hunk instead of arguing over it anymore. Before Hunk could try to volunteer someone else, they reached over and plopped their gifts in his lap.