Nanako's first love was the handsome and kind boy next door, Kazu, but he moved away to college. Now that she's all grown up and they're practically neighbors again, will she finally get him to notice her? He's still the perfect gentleman he always was and gets her heart racing... that is until he asks Nanako to wear a certain pair of ears that has his friendly demeanor doing a 180! In a fit of excitement, he pounces on her and proclaims his love for her... his sweet words mask his fierce passion in bed. It looks like getting Kazu to notice Nanako is going to be easier than she thought, but not in the way she expected. Once she finds out his kink, he only has eyes for her.Who knew trying on some cat ears was all it would take to win her first love's heart... and ignite his desire? She's never even kissed a boy before, but she's willing to go all the way. 熱の籠った目で隅々まで見られて、エッチな手つきで愛撫されるとパンツの中はもうぐちゃぐちゃ…っあの優しいお兄ちゃんがこんなにヤらしい顔で迫ってくるなんて…！──上京して、憧れのお兄ちゃんの家の近くに住むことになった菜々子。昔と変わらない紳士的な彼にドキドキしていたのもつかの間、とあるアイテムをつけた菜々子の姿に爽やかな笑顔が一変!?なぜか大興奮の彼に告白され、押し倒されて…優しい言葉とは裏腹に激しい腰遣いで突き上げられ甘イキが止まらない…っ変態お兄ちゃんのヤバい性癖とは…!?