"I'm home, Mom." Kazuya returns home to her mother, Yuka, for the first time in a year. Yuka was thrilled to meet her beloved son, whom she had raised under her care. A year ago, two people who loved each other every day. Kazuya, who has become a member of society and has grown into a strong man, can't control her excitement. They demand each other intensely to fill the blank of the year, but it's not enough. The gasping voice turns into a scream at the endless pursuit piston that seems to be forever.
