My Mate Is A Feline Gentleman (Manga) (Mature)

Toushirou, an omega, and Alex, his Nyartigian alpha mate, are now living together in bliss. But one day, Alex is called for a short-term assignment in the UK...and included is a special note that his mate can accompany him. Though Alex hesitates because of the dangers, Toushirou's desire to visit a foreign country wins out, and the two set off on a journey to a new land... Yen Press
(W/A/Ca) Arata Asanae