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 |
|---|---|---|
| 観賞 | 1 | 4.74 |
| ハイエナ | 1 | 5.03 |
| 盛りだくさん | 1 | 5.30 |
| 海を渡る | 1 | 5.14 |
| 乗り上げる | 1 | 5.00 |
| 形勢 | 1 | 4.74 |
| 手がない | 1 | 5.09 |
| 表立った | 1 | 5.31 |
| 事柄 | 1 | 4.14 |
| 医学書 | 1 | 5.56 |
| 無効 | 1 | 3.87 |
| どこであれ | 1 | 5.97 |
| 同封 | 1 | 5.22 |
| 毛頭 | 1 | 4.94 |
| になって初めて | 1 | 5.13 |
| 試験会場 | 1 | 5.15 |
| 罰金 | 1 | 4.59 |
| 対抗意識 | 1 | 5.04 |
| 浮き輪 | 1 | 4.99 |
| 真っただ中 | 1 | 5.15 |
| 寺 | 1 | 4.14 |
| 形無し | 1 | 5.30 |
| 変わり目 | 1 | 5.34 |
| 暮れる | 1 | 4.41 |
| 正月休み | 1 | 5.68 |
| 成人病 | 1 | 6.16 |
| 出来る限り早く | 1 | 5.60 |
| 一節 | 1 | 4.83 |
| モーターボート | 1 | 6.01 |
| 線が細い | 1 | 5.43 |
| トマホーク | 1 | 4.97 |
| 有効範囲 | 1 | 4.95 |
| 相続 | 1 | 4.80 |
| 堅さ | 1 | 5.11 |
| 新婚初夜 | 1 | 5.84 |
| 境 | 1 | 4.09 |
| 方達 | 1 | 4.68 |
| 群 | 1 | 3.62 |
| 大企業 | 1 | 4.91 |
| だだ | 1 | 4.56 |
| 気合いを入れる | 1 | 5.11 |
| 波涛 | 1 | 5.07 |
| 尽かす | 1 | 4.87 |
| 所持 | 1 | 3.81 |
| 各個 | 1 | 4.52 |
| 捜す | 1 | 3.93 |
| 使用法 | 1 | 5.24 |
| 芝居 | 1 | 4.11 |
| 不法 | 1 | 5.23 |
| 糧食 | 1 | 4.72 |
| 潜伏先 | 1 | 5.43 |
| 到る | 1 | 3.77 |
| 異常性 | 1 | 4.81 |
| 腸 | 1 | 4.49 |
| 顔が広い | 1 | 5.31 |
| ひと先ず | 1 | 3.58 |
| 何をするにも | 1 | 5.01 |
| 惨事 | 1 | 5.03 |
| 最終日 | 1 | 4.45 |
| 灰燼 | 1 | 5.04 |
| クーラー | 1 | 5.04 |
| 一糸乱れず | 1 | 5.75 |
| ラウンド | 1 | 4.55 |
| 憂う | 1 | 4.93 |
| 底辺 | 1 | 4.45 |
| 東回り | 1 | 5.82 |
| 校章 | 1 | 5.65 |
| タコ | 1 | 4.20 |
| 来賀 | 1 | 4.63 |
| うめぇ | 1 | 5.12 |
| 早口 | 1 | 4.32 |
| 手付 | 1 | 5.42 |
| 一人静 | 1 | 6.55 |
| はにかみ | 1 | 4.83 |
| 秤 | 1 | 4.68 |
| 聞き付ける | 1 | 5.22 |
| 顔が利く | 1 | 5.22 |
| 熾烈 | 1 | 4.59 |
| こだわる | 1 | 4.12 |
| 俊敏 | 1 | 4.05 |
| 半袖シャツ | 1 | 5.94 |
| 心置きなく | 1 | 4.75 |
| 雑誌 | 1 | 4.28 |
| 噴出す | 1 | 5.22 |
| 奪い返す | 1 | 4.68 |
| くるり | 1 | 3.94 |
| 検査 | 1 | 4.11 |
| 雁首 | 1 | 5.34 |
| レンズ | 1 | 4.43 |
| 手に負えない | 1 | 4.60 |
| 一晩 | 1 | 3.96 |
| 品質 | 1 | 3.75 |
| 口が上手い | 1 | 5.70 |
| 陣取り | 1 | 4.75 |
| 管轄外 | 1 | 5.26 |
| 傷薬 | 1 | 4.80 |
| ずんと | 1 | 5.39 |
| フラワーガール | 1 | 6.75 |
| 癇癪 | 1 | 4.59 |
| 明け暮れ | 1 | 4.83 |
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