(1) First Encounter... of everything?

Leo-1 (OC) x Gundam Seed

During a wrap jump to the Reef, Leonardo Shen, or Leo-1 as he is now known, found his ship struck something and jumped into a completely another universe where a fight between two kinds of human. Will he choose a side to fight? Or will he fight both side to maintance peace? Are there even other choices?

(Take place after the Artemis because of the asshole commander)
(Note 2: This will be written in first person, I try my best)