A year has passed since the father went on a business trip and never returned. Although the mother, Natsumi, acts tough, her loneliness is painfully clear to Yuuta. He can't find an answer for how he, as her son, can comfort her... Days pass without any resolution. Then one day, Yuuta witnesses Natsumi masturbating and crying after orgasm. Seeing his mother's pitiful state, Yuuta makes a decision: he will take the place of his father and embrace his mother.
