Leaving his parents on a trip, Yousuke finds himself under the care of his mother's friend, Ayase Mana. As he spends time with her, he can't help but fantasize about her sweet scent and soft skin. He longs to touch her smooth, pure white flesh and lose himself in her plush breasts. When Yousuke tries to steal her clothes as an excuse to feel closer to her, he gets caught red-handed. Instead of getting angry, however, Mana kisses him and asks if he's satisfied just with her underwear. Her question ignites new desires within him...

両親が旅行に行く代わりに母の親友・舞菜が面倒を見てくれることになった。甘い香りを放つ舞菜の色香についついエロい妄想をしてしまう亮介。滑らかな純白の肌に触れたい、柔らかそうなおっぱいに埋もれて甘えたい。舞菜のことで頭がいっぱいになった亮介は脱ぎたてホカホカの下着をオカズにしようと目論むが盗んだことがバレてしまう。しかし、舞菜は怒るどころか「下着だけで満足できるの？」とキスをしてきて…。