GAH so good!!!
Iilya was born an omega, and thus a slave in his country even if he was born to a king. He is bartered off to a wealthy kingdom as a bride and brings with him a whole bucket of cynicism. The king, it turns out is only ten years old, but even so he likes sharing time with the serious boy who is like the sun. Until his unscrupulous older brother returns and usurps the throne. With Khalid presumed dead, Iilya goes on the run (for eight years...)
Kouguu no Omega