Mizuno Ai was in the middle of the library. She had just started attending the United States Military Academy, otherwise known as Westpoint, and was excited to see everything the school offered. Unlike most of the people in this academy, she was the daughter of Japanese immigrants who had spent most of her life in the United States.
What inspired her to join Westpoint? That would be the fact that her grandfather was a veteran of the Imperial Japanese Army, and had often told her stories of his valorous actions when she was still a young child. Sadly, the man had passed away years ago, but Ai honored the man by joining the military of her host nation.