Makoto is a student at an art university. She was once captivated by her art class teacher, Ira when she was just 12 years old. Ira vanishes from the scene and, not until six years later, appears before Makoto at an art exhibition. Surprisingly, she looks the same as Makoto remembered and has a secret to hide. Although still human, Ira seems to have a thirst for blood.
One day, Momo who is a young woman met a 40-year-old man named Todo on the street. The two walk hand in hand while singing the children's song "Shoes Ring" and share their bodies. The next morning Todo, groping back memories of last night, saying, "It's like a journey." Knowing the meaning of the word, Momo cries at him silently. It is said that two people, each with a painful past, run away from the world toward the sea.
Twenty-year-old Matsuri Takabayashi learns that she only has ten years to live due to an incurable disease. She decides to not dwell on her life and not to fall in love – until she meets a man named Kazuto Manabe at a school reunion.