Since her husband left for a solo work assignment, Nanami has been tormented by loneliness and anxiety, growing closer to her son. Seeking to fill the emotional void, she becomes physically intimate with him. Their bond deepens over time, and she finds herself increasingly captivated by their secret moments together. The days spent waiting for her husband's return only intensify her physical longing and desire. Unable to suppress these forbidden feelings, she gradually becomes dependent on her son's presence. Her craving grows stronger each day, and she can no longer endure the wait for her husband to come home.