Boku no Tsugai wa Neko Shinshi: Eikoku-hen

Toushirou, an omega, and Alex, his Nyartigian alpha mate, are spending each day together in bliss—until Alex receives a summons to go to the UK for a temporary assignment. What's more, the letter comes with an extra note: Bring your omega mate with you. Though Alex hesitates over the dangers of bringing an omega overseas, Toushirou is fascinated by the idea of visiting a foreign country. But the new land awaiting them might not be as welcoming as Toushirou hopes, and the two must give their all to protect their relationship against those who wish to tear it down...

(Source: Yen Press)