Tony Stark and Y/n started being best friends at the age of 5. At age 10, Y/n was sent to the Red Room, where she was trained to be an assassin, much like Natasha. At age 20, Y/n graduated from the Red Room and escaped. Y/n and Tony reunited at age 22. Fast forward, Y/n and Tony are both 35 years old now, and both apart of the avengers. It is currently December, the Avengers tower is snowed in, and there are no missions. The avengers are taking this free time to strengthen friendships and bonds over drinks and games.