For Noboru, who was regularly scolded by his father for his grades, his mother-in-law, Juri, was his emotional support. Noboru always stared at her longing mother-in-law from the shadows, but one day she saw her enjoying a meeting with a stranger. A hot impulse that is different from disgust wells up in the appearance of sucking lips and entwining tongues. And, as if to recreate the lewd scene he saw in front of him, Noboru asks for a tongue and kiss from Shuri...