Today marks the beginning of our new relationship. Every day had been monotonous for Taichi until his mother's friend, Nene, appeared before him with her alluring smile. He couldn't help but be drawn to her magnificent cleavage, something he had never seen before. Despite claiming not to have any interest in women or their bodies, Taichi found himself unable to resist peeking at Nene's naked form while she was taking a bath. Unfortunately, he was caught by Nene herself, but instead of getting angry, she invited him over...

「今日からよろしくね」毎日退屈に過ごしていた太一の前に現れたのは妖艶な笑顔を浮かべる母の親友・寧々だった。今まで見たことのない見事な胸の谷間に吸い寄せられる太一。素直になれず女性になんて興味ないと頑なな態度を取るも、どうしても身体が気になる太一は寧々の入浴姿を覗いてしまう。運悪く寧々に気づかれるが、怒るどころか「こっちにおいで」と誘われてしまい…。