★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 |
|---|---|---|
| 焦り | 3 | 3.71 |
| 戻ってくる | 3 | 3.52 |
| 何時も | 3 | 2.58 |
| 流れ | 3 | 2.90 |
| ま | 3 | 2.85 |
| 懸ける | 3 | 3.35 |
| 収束 | 3 | 3.93 |
| 平和 | 3 | 3.39 |
| 施す | 3 | 3.52 |
| 呑み込む | 3 | 4.00 |
| 等 | 3 | 2.72 |
| 残った | 3 | 3.31 |
| 飛び散る | 3 | 3.93 |
| 槍の穂先 | 3 | 4.46 |
| 道のり | 3 | 4.16 |
| でない | 3 | 3.36 |
| 死臭 | 3 | 5.05 |
| 話し | 3 | 2.77 |
| 揺れ | 3 | 3.49 |
| 移動 | 3 | 2.67 |
| 愚か | 3 | 3.48 |
| 魅力的 | 3 | 3.80 |
| ど | 3 | 3.26 |
| 第一陣 | 3 | 4.71 |
| その先 | 3 | 3.57 |
| 切り | 3 | 3.60 |
| でよ | 3 | 3.78 |
| どうしても | 3 | 3.16 |
| 超える | 3 | 3.25 |
| 振り切る | 3 | 4.01 |
| 軍議 | 3 | 4.43 |
| 叶える | 3 | 3.71 |
| 到着 | 3 | 3.05 |
| 手おけ | 3 | 3.35 |
| 繋ぐ | 3 | 3.47 |
| 隊列 | 3 | 4.05 |
| 奪い取る | 3 | 4.10 |
| 我 | 3 | 2.82 |
| もう一度 | 3 | 3.13 |
| 対面 | 3 | 3.79 |
| 今にも | 3 | 3.62 |
| 荷物 | 3 | 3.17 |
| 単純 | 3 | 3.19 |
| ピクリ | 3 | 4.13 |
| 死者 | 3 | 3.65 |
| 晴れる | 3 | 3.91 |
| ああああ | 3 | 3.33 |
| 普段 | 3 | 2.97 |
| 言い訳 | 3 | 3.48 |
| ふと | 3 | 3.07 |
| 一敗 | 3 | 3.30 |
| 今さら | 3 | 3.70 |
| 務める | 3 | 3.82 |
| 吠える | 3 | 3.84 |
| 派遣 | 3 | 3.51 |
| 直に | 3 | 4.02 |
| 望み | 3 | 3.62 |
| 後ずさる | 3 | 4.13 |
| 違い | 3 | 2.95 |
| 凶暴 | 3 | 4.05 |
| 繰り広げる | 3 | 3.72 |
| 咆哮 | 3 | 3.55 |
| 趣味 | 3 | 3.37 |
| 操る | 3 | 3.32 |
| 救う | 3 | 3.16 |
| 土地 | 3 | 3.22 |
| 討伐 | 3 | 2.99 |
| もっと | 3 | 2.63 |
| 肘 | 3 | 3.85 |
| 打ち破る | 3 | 4.15 |
| 風圧 | 3 | 4.41 |
| 巨躯 | 3 | 4.09 |
| 救援 | 3 | 3.97 |
| 仕業 | 3 | 3.99 |
| と言っても | 3 | 3.05 |
| 飽きる | 3 | 3.89 |
| ことから | 3 | 3.46 |
| 微笑む | 3 | 3.01 |
| 失礼 | 3 | 3.13 |
| こう | 3 | 2.92 |
| 球体 | 3 | 3.81 |
| 無機質 | 3 | 4.31 |
| お別れ | 3 | 4.19 |
| 詰め | 3 | 3.50 |
| 充実 | 3 | 3.94 |
| その後 | 3 | 2.80 |
| 宜しい | 3 | 3.44 |
| 無地 | 3 | 5.06 |
| なれば | 3 | 2.99 |
| としたら | 3 | 3.18 |
| 嘲笑 | 3 | 4.09 |
| 我らが | 3 | 3.76 |
| 支持 | 3 | 3.96 |
| 効果 | 3 | 2.77 |
| 双 | 3 | 3.52 |
| 下級 | 3 | 3.78 |
| 出来れば | 3 | 3.04 |
| を通して | 3 | 3.48 |
| 喰らう | 3 | 3.34 |
| 振るう | 3 | 3.18 |
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