I'm pretty sure I read/skimmed through this before, but I don't plan to revisit it, even though the main character, the omega, has his head on his shoulders. Foreigner who is also a king = snoozefest for me, I don't care for this storyline. I came here after Tosca no Inu which has immensely likable characters for me (even though the yakuza trope is not super high on my fave list, too).
Ou-sama to Puppy Love