In a future Japan divided into several small nations after the collapse of civilization, this is a rise-to-power harem story depicting battles and adventures woven between the protagonist who has obtained the strongest level of power and several girls. The protagonist, who has time-slipped into a post-civilization-collapse future where special powers have become commonplace, takes up work as an "excavator," uncovering modern machine parts, products, metals and other items said to be relics from the mythological age based on memories and knowledge from that era. Furthermore, the protagonist encounters a beautiful girl in that land. This girl is the grown-up version of the neighbor's only daughter who was caught up in the time transfer before it happened—a young girl who adored him saying "I love you, big brother." That neighbor has become a Grand Duke ruling that land. ※Book version Volume 1 released on December 25, 2015. Book version Volume 2 released on February 25, 2016. Book version Volume 3 released on November 10, 2016.
| Word | Frequency | Difficulty |
|---|---|---|
| ようにする | 7 | 3.59 |
| 恩賞 | 7 | 4.76 |
| ゆったり | 7 | 3.87 |
| 兄 | 7 | 2.88 |
| この後 | 7 | 3.49 |
| 引っかかる | 7 | 3.71 |
| 到る処 | 7 | 4.65 |
| 巨体 | 7 | 3.50 |
| 困惑 | 7 | 3.35 |
| 変更 | 7 | 3.44 |
| 切れない | 7 | 3.53 |
| メモ | 7 | 3.86 |
| 強がる | 7 | 4.18 |
| 惣社 | 7 | 3.37 |
| 街並み | 7 | 4.13 |
| マズい | 7 | 4.31 |
| 巻き込む | 7 | 3.17 |
| 叩き | 7 | 3.26 |
| 箱 | 7 | 3.37 |
| 早いとこ | 7 | 5.00 |
| のせいで | 7 | 3.33 |
| 片隅 | 7 | 3.91 |
| 急に | 7 | 3.14 |
| に依る | 7 | 2.76 |
| 危うい | 7 | 3.97 |
| 悪 | 7 | 3.28 |
| 一歩 | 7 | 3.21 |
| 満面の笑み | 7 | 3.78 |
| その通り | 7 | 3.27 |
| 動かす | 7 | 2.95 |
| 子なし | 7 | 3.78 |
| 高級品 | 7 | 4.29 |
| 数日 | 7 | 3.33 |
| 質 | 7 | 3.62 |
| 持ち合わせ | 7 | 3.93 |
| 到底 | 7 | 3.64 |
| 遊ぶ | 7 | 3.13 |
| 認識 | 7 | 3.06 |
| 裏切る | 7 | 3.46 |
| 縛る | 7 | 3.53 |
| 断る | 7 | 3.15 |
| 武力 | 7 | 4.02 |
| 勿体ない | 7 | 3.70 |
| 昼 | 7 | 3.52 |
| 車体 | 7 | 4.49 |
| 強引 | 7 | 3.42 |
| お爺ちゃん | 7 | 3.83 |
| 駆る | 7 | 3.85 |
| 午後 | 7 | 3.43 |
| 足場 | 7 | 3.73 |
| 取り除く | 7 | 4.04 |
| 吹き飛ぶ | 7 | 3.58 |
| ゴツゴツ | 7 | 4.70 |
| 金属塊 | 7 | 5.21 |
| 付き | 7 | 3.15 |
| 来手 | 7 | 3.41 |
| 静寂 | 7 | 3.78 |
| リムジン | 7 | 5.29 |
| 祖父 | 7 | 3.41 |
| 慕う | 7 | 3.73 |
| 特権 | 7 | 4.19 |
| 皿 | 7 | 3.50 |
| 射す | 7 | 4.80 |
| あらまし | 7 | 4.86 |
| 掘り進む | 7 | 4.97 |
| 俺的 | 7 | 4.74 |
| 六人 | 7 | 3.94 |
| 向い | 7 | 3.44 |
| シャツ | 7 | 3.89 |
| 十四 | 7 | 4.09 |
| 偉そう | 7 | 3.84 |
| 短い | 7 | 3.10 |
| おいて | 7 | 3.53 |
| 強制労働 | 7 | 5.00 |
| 察知 | 7 | 3.27 |
| タイプ | 7 | 3.22 |
| に至っては | 7 | 3.87 |
| もう一回 | 7 | 4.10 |
| 頑丈 | 7 | 3.66 |
| 天変地異 | 7 | 4.66 |
| 次第に | 7 | 3.63 |
| 切れ味 | 7 | 4.08 |
| 人員 | 7 | 3.65 |
| じゃが | 7 | 3.56 |
| 知れる | 7 | 3.41 |
| 向く | 7 | 3.30 |
| 救助 | 7 | 4.14 |
| 次々 | 7 | 3.28 |
| ヒル | 7 | 4.25 |
| 美人 | 7 | 3.43 |
| 北門 | 7 | 4.33 |
| にも拘らず | 7 | 3.72 |
| 造り | 7 | 3.84 |
| 新しい | 7 | 2.99 |
| ひたすら | 7 | 3.47 |
| パンツ | 7 | 3.93 |
| 何倍も | 7 | 4.32 |
| 通路 | 7 | 3.23 |
| 認め | 7 | 3.14 |
| 何せ | 7 | 3.29 |
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