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 |
|---|---|---|
| 切り倒す | 7 | 4.58 |
| 肌 | 7 | 3.16 |
| 逃がす | 7 | 3.52 |
| 子なし | 7 | 3.78 |
| 街並み | 7 | 4.13 |
| 人生 | 7 | 3.17 |
| にあって | 7 | 3.76 |
| 八 | 7 | 3.40 |
| 掘り進む | 7 | 4.97 |
| 大気 | 7 | 3.87 |
| プレゼント | 7 | 3.58 |
| 口を開く | 7 | 3.33 |
| 造り | 7 | 3.84 |
| 跳躍 | 7 | 3.45 |
| それら | 7 | 3.01 |
| 今となっては | 7 | 3.99 |
| 詳しく | 7 | 3.53 |
| 晒す | 7 | 3.59 |
| 静寂 | 7 | 3.78 |
| 受験勉強 | 7 | 5.15 |
| 射す | 7 | 4.80 |
| 救助 | 7 | 4.14 |
| 次々 | 7 | 3.28 |
| ならん | 7 | 3.51 |
| 探しに | 7 | 3.93 |
| 刺す | 7 | 3.50 |
| 若さ | 7 | 4.16 |
| 突き刺す | 7 | 3.70 |
| 質 | 7 | 3.62 |
| ご免 | 7 | 3.00 |
| 得ない | 7 | 3.43 |
| そんなもの | 7 | 3.41 |
| もう一回 | 7 | 4.10 |
| 盛り上がる | 7 | 3.64 |
| 隠す | 7 | 3.08 |
| 数える | 7 | 3.87 |
| 別れ | 7 | 3.44 |
| セリフ | 7 | 3.66 |
| その様 | 7 | 2.83 |
| 高級品 | 7 | 4.29 |
| 祖父 | 7 | 3.41 |
| 当てる | 7 | 3.52 |
| 武力 | 7 | 4.02 |
| 危険性 | 7 | 3.86 |
| 断る | 7 | 3.15 |
| 風呂場 | 7 | 4.33 |
| 絶望 | 7 | 3.38 |
| 使嗾 | 7 | 3.46 |
| 機嫌 | 7 | 3.63 |
| 集合 | 7 | 3.98 |
| やがて | 7 | 3.09 |
| 一歩 | 7 | 3.21 |
| 強引 | 7 | 3.42 |
| ようにする | 7 | 3.59 |
| 漏らす | 7 | 3.26 |
| 後ろ足 | 7 | 4.47 |
| 綿 | 7 | 4.45 |
| 弱い | 7 | 3.11 |
| 域 | 7 | 3.85 |
| 向ける | 7 | 2.71 |
| 危ない | 7 | 3.21 |
| 体表 | 7 | 4.62 |
| 頼る | 7 | 3.38 |
| 叩き | 7 | 3.26 |
| 一面 | 7 | 3.79 |
| 切り払う | 7 | 4.63 |
| おこがましい | 7 | 4.55 |
| 相応しい | 7 | 3.28 |
| 接する | 7 | 3.89 |
| 執る | 7 | 4.23 |
| 画道 | 7 | 3.23 |
| でしょ | 7 | 3.03 |
| 悪 | 7 | 3.28 |
| 閉じ込める | 7 | 3.69 |
| 認め | 7 | 3.14 |
| 困った | 7 | 3.27 |
| 美人 | 7 | 3.43 |
| 試す | 7 | 3.51 |
| 諦める | 7 | 3.20 |
| そうだね | 7 | 3.30 |
| 育つ | 7 | 3.40 |
| どれ程 | 7 | 3.37 |
| 多 | 7 | 3.46 |
| 知識 | 7 | 3.01 |
| 宴 | 7 | 3.61 |
| 金属塊 | 7 | 5.21 |
| おいて | 7 | 3.53 |
| 梃 | 7 | 3.64 |
| 察知 | 7 | 3.27 |
| ゴツゴツ | 7 | 4.70 |
| 鎧 | 7 | 2.87 |
| 三十分 | 7 | 4.12 |
| 揺れ | 7 | 3.49 |
| そっか | 7 | 3.38 |
| 車体 | 7 | 4.49 |
| ことから | 7 | 3.46 |
| 和服 | 7 | 4.72 |
| 移す | 7 | 3.46 |
| 変更 | 7 | 3.44 |
| 増強 | 7 | 4.13 |
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