No callers are identified. No conversations are recorded. No phone records are kept. Now speak clearly and when you are finished say: 'Go ahead'.

It's Christmas Eve and we are going to go celebrate being young and being alive.

In 1968, the city of Yahiro had undergone rapid development after the war. Ryouga lives with his imouto Takane, accepting everything that happens in life as he believes that everything in the world ...