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 |
|---|---|---|
| 授ける | 4 | 3.93 |
| 執事 | 4 | 3.47 |
| 在るだけ | 4 | 3.88 |
| 耳 | 4 | 2.73 |
| 達す | 4 | 3.99 |
| 見あげる | 4 | 5.64 |
| 有意義 | 4 | 4.32 |
| 養う | 4 | 4.22 |
| 強敵 | 4 | 3.83 |
| 五分 | 4 | 3.87 |
| 無事に | 4 | 3.37 |
| お疲れ | 4 | 3.93 |
| 輝き | 4 | 3.35 |
| 呼び出し | 4 | 3.79 |
| 考え方 | 4 | 3.72 |
| 山のよう | 4 | 4.33 |
| 籠る | 4 | 3.91 |
| 冷やす | 4 | 4.17 |
| 塩焼き | 4 | 4.80 |
| 使命 | 4 | 3.96 |
| 換算 | 4 | 4.46 |
| オヤジ | 4 | 4.23 |
| 銃 | 4 | 3.38 |
| けれど | 4 | 2.43 |
| 良好 | 4 | 4.06 |
| 動き出す | 4 | 3.46 |
| まくし立てる | 4 | 4.54 |
| 適当 | 4 | 3.17 |
| 皆無 | 4 | 3.79 |
| かもしれん | 4 | 3.52 |
| 進み出る | 4 | 3.96 |
| 世襲制 | 4 | 5.46 |
| 有り難うございました | 4 | 3.41 |
| 初日 | 4 | 3.84 |
| 扇状 | 4 | 5.01 |
| 小言 | 4 | 4.42 |
| どちらか | 4 | 3.67 |
| 閉じる | 4 | 3.13 |
| 底力 | 4 | 5.14 |
| 我がまま | 4 | 3.88 |
| 具体的 | 4 | 3.47 |
| 豊か | 4 | 3.61 |
| 単車 | 4 | 6.34 |
| において | 5 | 3.01 |
| 内心 | 5 | 3.22 |
| 再確認 | 5 | 4.26 |
| 貝毒 | 5 | 6.59 |
| 中将 | 5 | 4.38 |
| 野 | 5 | 3.86 |
| あきれ顔 | 5 | 5.32 |
| 機械式 | 5 | 5.21 |
| その人 | 5 | 3.51 |
| 気をつけて | 5 | 3.82 |
| ベスト | 5 | 4.08 |
| 専門 | 5 | 3.87 |
| どす黒い | 5 | 4.42 |
| 信用 | 5 | 3.34 |
| 訴え | 5 | 3.74 |
| 式典 | 5 | 4.04 |
| 往く | 5 | 3.36 |
| 早々 | 5 | 3.54 |
| 顔色 | 5 | 3.47 |
| 潰れる | 5 | 4.02 |
| この人 | 5 | 3.25 |
| 一筋 | 5 | 4.11 |
| 証拠 | 5 | 3.32 |
| 歩み | 5 | 3.70 |
| 優先 | 5 | 3.37 |
| 熟成 | 5 | 4.42 |
| 立てる | 5 | 3.28 |
| 屋台 | 5 | 3.39 |
| 存在感 | 5 | 3.92 |
| 次々に | 5 | 3.79 |
| 引き受ける | 5 | 3.91 |
| 時折 | 5 | 3.49 |
| 親密 | 5 | 4.47 |
| 克服 | 5 | 4.32 |
| 行き当たる | 5 | 5.47 |
| 顔を合わせる | 5 | 4.19 |
| あらあら | 5 | 4.01 |
| アタリ | 5 | 5.02 |
| 言動 | 5 | 3.64 |
| 序列 | 5 | 4.22 |
| 手の平 | 5 | 4.00 |
| 遅れる | 5 | 3.60 |
| とく | 5 | 3.39 |
| 足の裏 | 5 | 4.56 |
| 大男 | 5 | 3.93 |
| 地区 | 5 | 3.99 |
| 言いよう | 5 | 3.98 |
| 務める | 5 | 3.82 |
| 後ずさり | 5 | 4.56 |
| 預け | 5 | 3.62 |
| ずつ | 5 | 3.48 |
| 長話 | 5 | 4.78 |
| 蘭 | 5 | 3.73 |
| 一夜 | 5 | 4.08 |
| 逃す | 5 | 3.61 |
| そんなところ | 5 | 3.92 |
| 散策 | 5 | 4.17 |
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