After her son Yutarou confides in her, saying, "Lately, my penis... gets hard every morning," a worried mother, Eri, checks on him the next morning. She's startled to see his impressive morning erection visibly lifting the blanket. Seeing her son distressed, believing he might be ill, Eri reassures him, "This is a sign of good health. Let Mommy help you release what's built up," and begins licking his rock-hard shaft while sucking his swollen testicles into her mouth, drawing out his pent-up fluids. The scene unfolds like an unexpected, intimate moment—something only adults would ever witness—right in the middle of their ordinary lives.