After falling asleep on a train, Mizuki wakes up at the last stop to find herself resting on the shoulder of the woman sitting next to her. The woman, Azami, starts to chat with her, quickly discovering that Mizuki ran away from home and has been on the train for three consecutive days. Mizuki begins to see herself in Azami. While she had left her friends and family behind, Azami has purposefully lived her life avoiding others, instead choosing to adventure across the world. Intrigued by Azami's free-spirited and outlandish personality, Mizuki decides to tag along with her in hopes of escaping from her past. As Mizuki and Azami explore various beautiful locations, they learn more about each other, and, slowly but surely, their feelings for one another grow. [Written by MAL Rewrite]