Super serious Asahi Suzumura and laidback, easygoing Mitsuki Sayama might seem like an odd couple, but they made a deal; they'll vacation around the world and when they get back to Japan, they'll get married. The people they meet and places they see will forever change their lives!  Final volume of the series!

After all their adventures around the world, Mitsuki and Asahi have finally reached the last leg of their journey. Onward to Canada, the two are hosted by familiar faces as they visit Niagara Falls and Vancouver. And back across the Pacific to see the Sydney Opera House and visit koalas, where Mitsuki encounters an old acquaintance... one who asks them about what their lives will look like after they return to Japan— out of the whirlwind of new cultures and places, back to the humdrum of real life.

What has this journey taught them about their relationship and their love for each other? If marriage is the next great adventure, are the two of them ready to jet off?