Summer vacation. The four sisters of the Kamuro family are about to experience an extremely indulgent summer. Rui (瑠衣), the eldest daughter of the Kamuro family, is a devastatingly beautiful girl. She's a university student who is a bit of a scatterbrain... but a big sister who loves her younger sisters dearly. However, while she's sleeping, her younger sisters do whatever they want to her. And no wonder—her younger sisters love their older sister desperately as well. In this summer when lust knows no bounds, what will become of Rui's chastity!? We will also be posting this on Nocturne Novels.
| Word | Frequency | Difficulty |
|---|---|---|
| つーか | 1 | 3.86 |
| 余意 | 1 | 3.23 |
| さあ | 1 | 3.10 |
| 再生 | 1 | 3.44 |
| 目を引く | 1 | 4.57 |
| 一枚 | 1 | 3.36 |
| 待ち望む | 1 | 4.44 |
| 安心 | 1 | 2.88 |
| おお | 1 | 2.89 |
| げふんげふん | 1 | 5.51 |
| 気が済む | 1 | 4.67 |
| 任せ | 1 | 3.02 |
| 本番 | 1 | 3.96 |
| 所業 | 1 | 4.10 |
| 引き締まった | 1 | 4.39 |
| ハワイ | 1 | 4.98 |
| とことこ | 1 | 4.93 |
| 掛け声 | 1 | 4.15 |
| ようにする | 1 | 3.59 |
| 分からん | 1 | 3.29 |
| 留め | 1 | 3.86 |
| くう | 1 | 3.45 |
| 確か | 1 | 2.92 |
| でしかない | 1 | 3.42 |
| 用具 | 1 | 4.95 |
| わあ | 1 | 3.94 |
| 短い | 1 | 3.10 |
| 何も | 1 | 2.48 |
| 何じゃ | 1 | 3.36 |
| 麻薬 | 1 | 4.37 |
| ヒューマンドラマ | 1 | 5.88 |
| 高まり | 1 | 4.56 |
| 一週間 | 1 | 3.50 |
| 起こし | 1 | 3.33 |
| よく出来ました | 1 | 5.00 |
| 平均 | 1 | 3.96 |
| 所 | 1 | 2.78 |
| 終える | 1 | 2.86 |
| 関わる | 1 | 3.17 |
| 一生 | 1 | 3.60 |
| 風邪 | 1 | 3.90 |
| だんだん | 1 | 3.78 |
| 少し | 1 | 2.13 |
| 楽しむ | 1 | 3.09 |
| 最早 | 1 | 3.03 |
| ままに | 1 | 3.37 |
| 催淫 | 1 | 5.79 |
| エロ | 1 | 4.02 |
| 着る | 1 | 3.35 |
| 張り | 1 | 3.82 |
| 今にも | 1 | 3.62 |
| 近付ける | 1 | 4.32 |
| 牛 | 1 | 3.67 |
| 効果 | 1 | 2.77 |
| 液体 | 1 | 3.65 |
| 話 | 1 | 1.96 |
| 三分 | 1 | 4.51 |
| される | 1 | 2.48 |
| キモ | 1 | 4.57 |
| 結婚 | 1 | 2.95 |
| なー | 1 | 3.13 |
| 幸せ | 1 | 2.99 |
| 終わる | 1 | 2.44 |
| 用 | 1 | 2.75 |
| おいた | 1 | 3.06 |
| としても | 1 | 2.63 |
| 時の | 1 | 2.80 |
| 姉妹 | 1 | 3.57 |
| レム睡眠 | 1 | 6.07 |
| 何を | 1 | 2.46 |
| い | 1 | 2.74 |
| 方法 | 1 | 2.86 |
| 一緒に | 1 | 2.46 |
| 一番目 | 1 | 4.71 |
| 昼 | 1 | 3.52 |
| 吹っ | 1 | 3.29 |
| 速度 | 1 | 2.90 |
| しまう | 1 | 2.03 |
| 我慢 | 1 | 3.21 |
| 着 | 1 | 2.95 |
| もて | 1 | 4.27 |
| ふむ | 1 | 3.03 |
| め | 1 | 3.21 |
| 柄 | 1 | 3.45 |
| 動く | 1 | 2.53 |
| 青空 | 1 | 4.06 |
| 叩く | 1 | 2.98 |
| 多数 | 1 | 3.54 |
| メートル | 1 | 3.08 |
| 上目遣い | 1 | 4.13 |
| 悖る | 1 | 5.38 |
| 一面 | 1 | 3.79 |
| 途中 | 1 | 2.94 |
| 同じ | 1 | 2.31 |
| その割には | 1 | 4.45 |
| 我が強い | 1 | 5.75 |
| 擦りつける | 1 | 5.08 |
| 成す | 1 | 3.63 |
| 蝶よ花よ | 1 | 5.35 |
| 中々どうして | 1 | 4.84 |
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