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 |
|---|---|---|
| 理論 | 4 | 3.99 |
| 身を持って | 4 | 4.97 |
| 息の合った | 4 | 5.07 |
| 唱歌 | 4 | 4.26 |
| 含まれる | 4 | 4.20 |
| 化する | 4 | 3.89 |
| 守り人 | 4 | 5.26 |
| 固執 | 4 | 4.46 |
| 息も絶え絶え | 4 | 4.56 |
| 管 | 4 | 4.08 |
| 注視 | 4 | 4.09 |
| 目の当たり | 4 | 3.91 |
| 儂等 | 4 | 4.05 |
| どーん | 4 | 4.93 |
| そんなこんな | 4 | 4.09 |
| 工作 | 4 | 3.94 |
| 生命 | 4 | 3.56 |
| 見所 | 4 | 4.84 |
| カバー | 4 | 4.03 |
| 歪み | 4 | 3.95 |
| 投下 | 4 | 4.29 |
| 闘争 | 4 | 4.16 |
| 日付 | 4 | 4.20 |
| 押し合い | 4 | 5.19 |
| 勝算 | 4 | 4.30 |
| 骨折 | 4 | 4.34 |
| 降り立つ | 4 | 4.08 |
| 摂取 | 4 | 4.33 |
| パワー | 4 | 3.68 |
| 虜 | 4 | 4.46 |
| 補足説明 | 4 | 4.87 |
| 苦い経験 | 4 | 5.47 |
| 宅 | 4 | 4.39 |
| 見分ける | 4 | 4.62 |
| 一人ずつ | 4 | 4.33 |
| 一回戦 | 4 | 4.60 |
| 取り寄せる | 4 | 4.42 |
| 行って来い | 4 | 4.99 |
| 晴れ | 4 | 4.50 |
| 喧嘩腰 | 4 | 4.95 |
| 温かい | 4 | 3.58 |
| うわ | 4 | 3.47 |
| 姉者 | 4 | 5.80 |
| 背ける | 4 | 4.01 |
| 下手糞 | 4 | 5.41 |
| 心苦しい | 4 | 4.22 |
| あーあ | 4 | 4.23 |
| 開催 | 4 | 3.90 |
| 滅殺 | 4 | 5.52 |
| 副官 | 4 | 3.86 |
| 謙遜 | 4 | 4.25 |
| 利き腕 | 4 | 4.98 |
| 用済み | 4 | 4.81 |
| 間引く | 4 | 4.99 |
| 原点 | 4 | 4.91 |
| 繁盛 | 4 | 4.52 |
| 好きにする | 5 | 4.81 |
| 寝ぼけ眼 | 5 | 4.89 |
| 別格 | 5 | 4.47 |
| 未練 | 5 | 4.06 |
| 必要最低限 | 5 | 4.50 |
| 仮死 | 5 | 5.01 |
| 鼓動 | 5 | 3.91 |
| 行けない | 5 | 4.06 |
| 手出し | 5 | 4.06 |
| 火事 | 5 | 4.29 |
| パーセント | 5 | 4.11 |
| 全てにおいて | 5 | 4.71 |
| リバーシ | 5 | 4.89 |
| 丸焼き | 5 | 4.53 |
| あけましておめでとうございます | 5 | 4.86 |
| 泣かせる | 5 | 4.47 |
| 心構え | 5 | 4.34 |
| 長身 | 5 | 4.01 |
| 飲み込み | 5 | 4.25 |
| 営業 | 5 | 4.07 |
| メダリオン | 5 | 6.14 |
| 五体 | 5 | 4.43 |
| 小舟 | 5 | 4.52 |
| 無事か | 5 | 4.48 |
| 命により | 5 | 4.99 |
| 開拓 | 5 | 3.76 |
| 使徒 | 5 | 3.45 |
| 伺い | 5 | 4.41 |
| でないと | 5 | 3.83 |
| 張り巡らす | 5 | 4.37 |
| 千切り | 5 | 4.67 |
| 会釈 | 5 | 4.14 |
| 情勢 | 5 | 4.08 |
| 突き飛ばす | 5 | 4.19 |
| そんで | 5 | 4.23 |
| 日数 | 5 | 4.23 |
| 唆す | 5 | 4.69 |
| 突然変異 | 5 | 4.72 |
| 起伏 | 5 | 4.50 |
| 事が無い | 5 | 4.25 |
| 涙ぐむ | 5 | 4.42 |
| 聞き耳 | 5 | 4.38 |
| 浮遊 | 5 | 3.74 |
| 切り刻む | 5 | 4.17 |
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