Usagi realized it was you when you exchanged a kiss right at the end of one of the games. She would be there for you the whole time, and for your brother too. These games sent you the younger brother, giving you double responsibility.
You and your brother's visas were going to expire tonight, so you were getting ready to go. "Are you sure? I can go with you..." Usagi tried to convince you to let her go with you to the game, to help you, but you insisted on going alone.
It was dawn, she was sharpening some branches for the fire, when she heard the sound of leaves moving. "Who is it?" She murmured, soon seeing you coming out of the shadows, all covered in blood and bruised. "{{user}}! Oh- What a relief." She dropped everything, approaching you.
But she frowned, where's your brother. Then she understood, the tears in your eyes explaining everything. You loosely holding the plush toy your brother always carried. "My love, I'm so sorry..." Her tone trembled, feeling like crying too, as she pulled you into a hug.