★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 |
|---|---|---|
| 解く | 1 | 3.30 |
| 酒場 | 1 | 3.52 |
| 両腕 | 1 | 3.60 |
| ボーッと | 1 | 4.76 |
| 道案内 | 1 | 4.46 |
| 身柄 | 1 | 4.20 |
| 一年 | 1 | 3.42 |
| 決す | 1 | 4.17 |
| 真偽 | 1 | 4.26 |
| 壮年 | 1 | 4.22 |
| 猛攻 | 1 | 4.23 |
| 空中 | 1 | 3.16 |
| 恩がある | 1 | 4.90 |
| 出入り口 | 1 | 4.00 |
| 土煙 | 1 | 4.12 |
| 三回 | 1 | 4.07 |
| 取り除く | 1 | 4.04 |
| 異臭 | 1 | 4.72 |
| オーラ | 1 | 3.69 |
| 駅馬車 | 1 | 5.11 |
| ふっと | 1 | 3.77 |
| 鮮血 | 1 | 4.11 |
| 嫌悪感 | 1 | 4.10 |
| 解釈 | 1 | 3.86 |
| 路頭 | 1 | 5.19 |
| 彷徨う | 1 | 4.69 |
| 中小 | 1 | 4.96 |
| すっぽり | 1 | 4.30 |
| 足りる | 1 | 3.35 |
| 引き離す | 1 | 4.03 |
| びっくり | 1 | 3.65 |
| 削る | 1 | 3.52 |
| 宜しければ | 1 | 3.89 |
| 教え | 1 | 2.64 |
| 放り投げる | 1 | 4.37 |
| 丁度 | 1 | 3.59 |
| 斑 | 1 | 4.39 |
| 休日 | 1 | 3.94 |
| 同然 | 1 | 3.78 |
| さえも | 1 | 3.68 |
| 中二 | 1 | 4.66 |
| 一種 | 1 | 3.64 |
| 熟知 | 1 | 4.51 |
| 丸見え | 1 | 4.59 |
| 遺体 | 1 | 3.87 |
| 裂け目 | 1 | 4.56 |
| 歩き回る | 1 | 4.10 |
| ピンと | 1 | 3.97 |
| 陣営 | 1 | 3.96 |
| おはようございます | 1 | 3.74 |
| 現 | 1 | 3.67 |
| がさ | 1 | 3.81 |
| 小柄 | 1 | 3.65 |
| 犠牲者 | 1 | 4.13 |
| 落ち着いた | 1 | 3.49 |
| 足の付け根 | 1 | 5.52 |
| 野営 | 1 | 3.87 |
| 楽観的 | 1 | 4.45 |
| 鎮魂歌 | 1 | 5.67 |
| 助かる | 1 | 3.03 |
| 軍略 | 1 | 5.01 |
| 午前中 | 1 | 3.96 |
| 豪勢 | 1 | 4.42 |
| 将校 | 1 | 4.30 |
| ツラ | 1 | 4.80 |
| 貢献 | 1 | 4.04 |
| 野郎ども | 1 | 4.70 |
| ご丁寧 | 1 | 4.28 |
| 恥ずべき | 1 | 4.87 |
| 広大 | 1 | 3.78 |
| たって | 1 | 3.39 |
| かき集める | 1 | 4.35 |
| ギザギザ | 1 | 5.05 |
| 突進 | 1 | 3.63 |
| 平伏す | 1 | 4.59 |
| とく | 1 | 3.39 |
| 踏みならす | 1 | 5.57 |
| 重視 | 1 | 3.78 |
| 顔向け | 1 | 4.79 |
| キッと | 1 | 4.49 |
| 滅ぼす | 1 | 3.50 |
| ご飯 | 1 | 3.33 |
| 黒曜石 | 1 | 4.62 |
| ゲル | 1 | 4.33 |
| 飛び降りる | 1 | 4.03 |
| 極まりない | 1 | 3.97 |
| 撃破 | 1 | 3.78 |
| 一二 | 1 | 3.80 |
| 返答 | 1 | 3.36 |
| しょうがない | 1 | 3.52 |
| 噛みしめる | 1 | 4.08 |
| 盗み | 1 | 4.28 |
| まき散らす | 1 | 4.30 |
| 兵力 | 1 | 3.70 |
| 大貴族 | 1 | 4.13 |
| やがて | 1 | 3.09 |
| 黙す | 1 | 4.76 |
| のらりくらり | 1 | 4.85 |
| 束の間 | 1 | 4.34 |
| 多すぎる | 1 | 4.09 |
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