User blog comment:1st Prince of Winds/Winter Awards 2018: Fusion's votes/@comment-32220816-20180207220606

Also, some of your questions for Luna have answers.

1. Shadow wasn't in GUN because he was occupied with a mission. It says "The Commander called the agents, but everyone who wasn't defeated by Luna was occupied," so it makes sense.

2. Luna doesn't really care if Shadow's his own person or not, but the Commander could trick Shadow to come so that Luna could ambush him.

3. She trained herself to use her powers by, as it says, practicing and training. (Ironic, since you were the one who gave me that piece of advice yourself, but maybe you missed it.)