An OVA with five short episodes from Seizou Watase's romantic manga: "Building Without Tide" "Brother and Sister" "Sometimes I'm Happy" "I've Saved the Sidecar for You" "The Santa Quartet"

One night a Goblin father came home gave his son a red handball. But the boy was shocked to hear that his father picked it up in front of the house of a girl called Yuki The boy decided to return it to her. Next morning, he ran in the snow to a village and saw many boys and girls singing cheerfully. When he came to a small house, he saw a girl sitting alone on the veranda. She said, "I am Yuki. Who are you?" He handed a ball to her without an answer. She was very glad and said " I was looking for it. My sickly mother made this for me. Thank you very much." That gave him relief and they become friends.

Chisato's journey home from Manchuria after the war.

The story begins in the future when Earth itself is no longer inhabitable by living creatures. Humans began their interstellar migration with space colonies. Vince and Hana work as researchers in the Cambrian Project. Together with the creature Pikaia, they seek the Lost Code, the key to restoring Earth, and aim to return to Cambrian-era Earth.