Manabu was expected to have a bright future in the prestigious baseball team, but he was seriously injured during a game and that path was cut short. After that, his mother, unable to bear seeing him living a self-destructive life, called in a helper, Kana, to help him get back to normal... Manabu is gradually Kokoro to her, who has a gentle smile and never refuses anything. And as she wraps around his pent-up erect penis and leads him to ejaculation over and over again, his rough Kokoro is gradually healed.