Office lady, Mizuki, accidentally bumped into her childhood friend, Ryouhei while attending a city mixer. She felt awkward at first because she was rejected by him before in the past but she still finds her heart racing when with him especially since he's become more handsome.

After drinking herself unconscious, she woke up to find Ryouhei nursing her in his home. When she accidentally showed a weak spot, Ryouhei tells her that he might not be able to hold himself back if she tempts him too much and he then proceeds to push her down!?

As she finds herself melting under his passionate gaze and gentle caresses, she wonders why Ryouhei is doing this with her when he said that he already has someone he likes.