Brothers At Arms (The Zyearth Chronicles)

Trecheon Omnir lives every day in a fog of cynicism. Mechanic by day, assassin-for-hire by night, Trecheon hates the life he's been forced into after losing both arms in the cataclysmic conflict known as the War of Eons, often wondering if it's even worth it. And yet, he's terrified of losing the few people who have chosen to stay by his side.But then he learns that his traitorous brother, Ryota, has shown his ugly muzzle again, causing who knows what kind of trouble. And Trecheon sees it as his job to finish what he started - take out a dangerous target left over from the War. Then he meets Matt, a strange quilar with literal elemental magic who hates him based solely on his last name, and a past he doesn't understand. Without warning, Trecheon is thrust into a war of magic, kings, and monsters - and he's not sure he'll survive it.