★Novelized by Overlap Bunko. Series cumulative sales exceed 1 million copies. All 13 volumes now on sale. Once, the boy was called the "God of War." He saved a fallen nation in the otherworld called Alethia, and through conquering surrounding countries, he built a great empire. However, the boy made the resolve to abandon everything and returned to the modern era at the cost of losing his memory. Three years have passed, and the boy was living his days happily. But then he is summoned back to the otherworld once more. However, it was Alethia 1,000 years in the future. His past glory has become "myth," and the "legend" of the boy called the "Dual Black Hero King" begins to unfold.
| Word | Frequency | Difficulty |
|---|---|---|
| 治世 | 1 | 4.63 |
| 祝詞 | 1 | 3.05 |
| 顕著 | 1 | 4.36 |
| 散らす | 1 | 3.89 |
| 一息 | 1 | 3.79 |
| 埋まる | 1 | 3.77 |
| 暗殺 | 1 | 3.57 |
| 所詮 | 1 | 3.65 |
| 列柱 | 1 | 5.78 |
| 黙す | 1 | 4.76 |
| 図書室 | 1 | 4.11 |
| 変わった | 1 | 3.19 |
| 弄ぶ | 1 | 4.15 |
| とも言う | 1 | 4.32 |
| 又は | 1 | 3.91 |
| 待ち伏せ | 1 | 4.24 |
| 恩を仇で返す | 1 | 5.33 |
| マシ | 1 | 3.53 |
| 柔道 | 1 | 4.70 |
| 丸々 | 1 | 4.39 |
| すぱっと | 1 | 4.98 |
| 嘘偽り | 1 | 4.58 |
| 両国 | 1 | 4.22 |
| 篠 | 1 | 4.01 |
| 吐き気を催す | 1 | 5.09 |
| 村人 | 1 | 3.41 |
| がん | 1 | 4.47 |
| 無差別 | 1 | 4.48 |
| 第三者 | 1 | 4.19 |
| 大型 | 1 | 3.45 |
| 陥落 | 1 | 4.12 |
| 駆けだす | 1 | 4.55 |
| 芯 | 1 | 4.04 |
| 丁度 | 1 | 3.59 |
| 足らず | 1 | 4.19 |
| おいそれと | 1 | 4.50 |
| ゴロゴロ | 1 | 4.13 |
| 打ち合う | 1 | 4.30 |
| 尾 | 1 | 3.44 |
| 遙かに | 1 | 3.80 |
| ピジョン | 1 | 6.48 |
| その事 | 1 | 3.14 |
| 心許ない | 1 | 4.55 |
| ゴクリ | 1 | 4.44 |
| 呟き | 1 | 3.31 |
| 低下 | 1 | 3.67 |
| 憶える | 1 | 4.16 |
| 揃える | 1 | 3.93 |
| やれ | 1 | 3.27 |
| 重力 | 1 | 3.68 |
| 運び込む | 1 | 4.06 |
| シート | 1 | 4.29 |
| 整列 | 1 | 4.30 |
| 稀少価値 | 1 | 6.14 |
| 童男 | 1 | 3.91 |
| 礎 | 1 | 4.44 |
| 下記 | 1 | 4.02 |
| 好き勝手 | 1 | 3.90 |
| 荷揚げ | 1 | 4.53 |
| 行政 | 1 | 4.55 |
| 渡し | 1 | 2.40 |
| 一欠片 | 1 | 4.90 |
| 軽傷者 | 1 | 5.35 |
| 高 | 1 | 3.14 |
| パッチリ | 1 | 5.27 |
| 通う | 1 | 3.42 |
| 全部 | 1 | 2.88 |
| 土煙 | 1 | 4.12 |
| 一喝 | 1 | 4.40 |
| 拍子 | 1 | 4.27 |
| 一歩下がる | 1 | 4.97 |
| オアシス | 1 | 4.44 |
| 三回 | 1 | 4.07 |
| じっくり | 1 | 3.75 |
| でさえ | 1 | 3.45 |
| 助長 | 1 | 4.80 |
| 現 | 1 | 3.67 |
| 帰り道 | 1 | 4.09 |
| 特権 | 1 | 4.19 |
| 気を取り直す | 1 | 4.86 |
| 寝静まる | 1 | 4.67 |
| この中 | 1 | 3.83 |
| うねる | 1 | 4.56 |
| 登山 | 1 | 4.75 |
| 光を放つ | 1 | 4.32 |
| 山々 | 1 | 4.26 |
| 仕掛け | 1 | 3.32 |
| 追い打ち | 1 | 4.55 |
| 必要ない | 1 | 3.67 |
| 百姓 | 1 | 4.62 |
| 肉界 | 1 | 7.59 |
| はらり | 1 | 5.48 |
| 発生源 | 1 | 4.53 |
| ヒビ | 1 | 4.21 |
| 恨み | 1 | 3.70 |
| 町並み | 1 | 4.51 |
| 事切れる | 1 | 4.76 |
| 保存 | 1 | 3.86 |
| 野営 | 1 | 3.87 |
| 叱責 | 1 | 4.17 |
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