The protagonist, a middle school student named Nanoka, visits her childhood friend Chihaya, who has been absent from school for about a week, to see how she's doing. When she enters the room and listens to what happened, Chihaya tells her that she has contracted a disease that is turning her into something non-human. As Nanoka tries to leave when it's time to go, for some reason she is suddenly pushed down onto the bed by her childhood friend!...
| Word | Frequency | Difficulty |
|---|---|---|
| 湾曲 | 1 | 4.74 |
| 境界線 | 1 | 4.41 |
| 見とれる | 1 | 4.38 |
| それに | 1 | 2.23 |
| どれだけ | 1 | 3.08 |
| かなり | 1 | 2.54 |
| 考える | 1 | 2.30 |
| 一言 | 1 | 3.11 |
| 替え | 1 | 4.19 |
| 眠る | 1 | 3.15 |
| 扱う | 1 | 3.21 |
| 滑り込む | 1 | 4.34 |
| 漂う | 1 | 3.32 |
| 乳 | 1 | 3.24 |
| 他地 | 1 | 1.90 |
| キス | 1 | 3.48 |
| 確か | 1 | 2.92 |
| 僧尼 | 1 | 2.52 |
| 二神 | 1 | 4.37 |
| ては | 1 | 2.43 |
| 穴 | 1 | 3.11 |
| 微笑み | 1 | 3.30 |
| 打つ | 1 | 3.38 |
| 最後まで | 1 | 3.43 |
| 怖い | 1 | 2.81 |
| ぽつり | 1 | 3.87 |
| 震わせる | 1 | 3.45 |
| 沈め | 1 | 4.17 |
| 重心 | 1 | 4.28 |
| まさか | 1 | 2.68 |
| おける | 1 | 3.97 |
| 衝撃 | 1 | 3.03 |
| 週間 | 1 | 4.06 |
| 抑えつける | 1 | 5.27 |
| 元気 | 1 | 3.07 |
| 一敗 | 1 | 3.30 |
| 心配 | 1 | 2.58 |
| 幼芽 | 1 | 3.74 |
| 最低 | 1 | 3.50 |
| 崩れ | 1 | 3.56 |
| ようやく | 1 | 2.82 |
| みたい | 1 | 2.65 |
| 酷い | 1 | 3.02 |
| 沈む | 1 | 3.38 |
| 久しぶり | 1 | 3.40 |
| 気分 | 1 | 2.99 |
| さえ | 1 | 2.89 |
| 治る | 1 | 3.61 |
| ちゃ | 1 | 2.92 |
| 付き合う | 1 | 3.28 |
| される | 1 | 2.48 |
| 無い | 1 | 2.25 |
| じっとり | 1 | 4.64 |
| 響く | 1 | 3.00 |
| 過ぎ | 1 | 3.12 |
| 掴まる | 1 | 4.27 |
| 動く | 1 | 2.53 |
| 退院 | 1 | 4.70 |
| これから | 1 | 2.69 |
| 堪える | 1 | 3.45 |
| 宿す | 1 | 3.69 |
| 辛い | 1 | 3.16 |
| そもそも | 1 | 2.73 |
| 目線 | 1 | 3.61 |
| 入院 | 1 | 4.36 |
| 締めつける | 1 | 5.70 |
| 腰を下ろす | 1 | 4.19 |
| 機会 | 1 | 3.05 |
| 本当 | 1 | 2.77 |
| 参賀 | 1 | 2.47 |
| 静か | 1 | 3.43 |
| とても | 1 | 2.67 |
| 整った | 1 | 3.72 |
| に取って | 1 | 2.44 |
| いきなり | 1 | 2.95 |
| 貰う | 1 | 2.51 |
| 更に | 1 | 2.42 |
| 位相 | 1 | 4.30 |
| 波 | 1 | 3.25 |
| 跳ね | 1 | 3.85 |
| 話 | 1 | 1.96 |
| 絡み合う | 1 | 4.34 |
| 勿論 | 1 | 2.47 |
| 幾ど | 1 | 2.84 |
| すら | 1 | 2.67 |
| 壊れ物 | 1 | 5.22 |
| そしたら | 1 | 3.83 |
| 丁度 | 1 | 3.59 |
| 染め | 1 | 3.64 |
| ぬるり | 1 | 5.03 |
| 吐き気がする | 1 | 4.98 |
| 表情 | 1 | 2.35 |
| 越える | 1 | 3.59 |
| 嬉しそう | 1 | 3.06 |
| 撫でる | 1 | 2.95 |
| 刺す | 1 | 3.50 |
| ちゃんと | 1 | 2.69 |
| 変える | 1 | 3.02 |
| 光 | 1 | 2.41 |
| びくりと | 1 | 4.27 |
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