The man once called the world's strongest agent became an educator training the next generation upon his retirement. After raising disciples and passing sixty years of age, he dies in an operation orchestrated by those in power above him, but is reborn into another world while retaining his memories. Though surprised by different races and magic, he adapts with his characteristic quick thinking, turning everything into his own sustenance. As he masters special magic and continues rigorous training, he reaches the strongest level of power, but decides to pursue the path of educator once more—something he left unfinished in his previous life. This is the story of an educator who, based on the memories and experiences of his former life, travels the world together with his disciples.
| Word | Frequency | Difficulty |
|---|---|---|
| 空飛ぶ | 1 | 4.26 |
| 本を広げる | 1 | 6.18 |
| チート | 1 | 3.76 |
| 侮蔑 | 1 | 4.32 |
| 耳に入る | 1 | 4.72 |
| 空気抵抗 | 1 | 4.93 |
| 軟禁 | 1 | 4.53 |
| 影武者 | 1 | 4.56 |
| 晴れやかな笑顔 | 1 | 5.23 |
| 着目 | 1 | 4.99 |
| マフラー | 1 | 4.46 |
| 跳梁跋扈 | 1 | 5.25 |
| 命を懸ける | 1 | 5.02 |
| 知らせ | 1 | 3.68 |
| 急場凌ぎ | 1 | 6.34 |
| 水音 | 1 | 4.59 |
| 植え付け | 1 | 4.61 |
| 狼藉者 | 1 | 5.53 |
| びびる | 1 | 4.52 |
| 使いやすい | 1 | 4.59 |
| 物理 | 1 | 3.28 |
| 北門 | 1 | 4.33 |
| 哀れむ | 1 | 4.74 |
| 情け容赦なく | 1 | 5.36 |
| 高層ビル | 1 | 5.05 |
| 引っ越し | 1 | 4.29 |
| 輸送手段 | 1 | 5.46 |
| マッハ | 1 | 4.93 |
| 両開き | 1 | 4.74 |
| うだつが上がらない | 1 | 6.57 |
| 食い付きが良い | 1 | 6.89 |
| 下品 | 1 | 4.27 |
| 尽かす | 1 | 4.87 |
| 一糸乱れぬ | 1 | 4.85 |
| 左胸 | 1 | 4.70 |
| 眩暈 | 1 | 4.46 |
| 街路 | 1 | 4.59 |
| 腐れ縁 | 1 | 4.90 |
| 粉骨砕身 | 1 | 5.34 |
| 伸縮性 | 1 | 5.27 |
| 癖毛 | 1 | 5.25 |
| 直刃 | 1 | 5.24 |
| 作業中 | 1 | 4.59 |
| 想いで | 1 | 4.69 |
| グビグビ | 1 | 5.74 |
| 疑いの目 | 1 | 4.94 |
| ああして | 1 | 4.57 |
| 恩義 | 1 | 4.45 |
| 緑一色 | 1 | 5.65 |
| 光明 | 1 | 4.66 |
| 考えすぎる | 1 | 5.45 |
| 処女 | 1 | 4.38 |
| 蜥蜴の尻尾切り | 1 | 6.14 |
| 榴弾 | 1 | 4.94 |
| 親子喧嘩 | 1 | 5.40 |
| 叩き斬る | 1 | 5.18 |
| 三食 | 1 | 4.89 |
| 円卓 | 1 | 4.32 |
| ヘッドスライディング | 1 | 5.84 |
| 海水 | 1 | 4.15 |
| わんわん | 1 | 4.63 |
| 世話焼き | 1 | 5.01 |
| 男女関係 | 1 | 5.11 |
| 上級者 | 1 | 4.86 |
| 男湯 | 1 | 4.88 |
| 衆人環視 | 1 | 4.96 |
| 湛える | 1 | 4.18 |
| 嚥下 | 1 | 4.84 |
| 当事者 | 1 | 4.02 |
| 最初で最後 | 1 | 4.91 |
| ほうが良い | 1 | 3.44 |
| 新婚 | 1 | 4.58 |
| 足が遅い | 1 | 5.25 |
| 蚊 | 1 | 4.57 |
| 併せる | 1 | 5.00 |
| 気長 | 1 | 4.63 |
| 浮つく | 1 | 4.70 |
| ゲットー | 1 | 6.18 |
| 不相応 | 1 | 4.82 |
| 接続時間 | 1 | 6.51 |
| 鳩 | 1 | 4.46 |
| 夜伽 | 1 | 4.97 |
| くたばれ | 1 | 4.95 |
| 手先 | 1 | 4.25 |
| 大臣 | 1 | 3.90 |
| 言うまでも無く | 1 | 5.15 |
| 心が折れる | 1 | 5.08 |
| ペン | 1 | 3.95 |
| 足掛かり | 1 | 4.98 |
| 屈託の無い | 1 | 5.53 |
| 刺突 | 1 | 4.02 |
| 拳を握る | 1 | 4.73 |
| スタートライン | 1 | 5.11 |
| 手を組む | 1 | 4.81 |
| 文句を付ける | 1 | 5.53 |
| ずっと前に | 1 | 5.16 |
| 形無し | 1 | 5.30 |
| 収集 | 1 | 4.11 |
| 気の置けない | 1 | 5.22 |
| 僅かしか | 1 | 5.24 |
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