"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. As they travel from country to country, the different people, cultures and cuisine they encounter begin to bring them closer together. After leaving Bolivia, the pair are off to Peru, Panama, and Mexico! Having come out to his little brother, Asahi finds himself able to express his affection for himself and Mitsuki more openly-- but in the midst of the train to Peru casts a shadow over the excitement of their trip..."--