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 |
|---|---|---|
| 科学的 | 1 | 4.82 |
| お仕事 | 1 | 3.73 |
| んなバカな | 1 | 6.04 |
| 息遣い | 1 | 4.51 |
| 小高い | 1 | 5.06 |
| 立案者 | 1 | 5.49 |
| ショック | 1 | 3.60 |
| 何事も | 1 | 3.93 |
| 静けさ | 1 | 4.37 |
| 水もしたたる | 1 | 6.61 |
| 順に | 1 | 4.01 |
| 最高責任者 | 1 | 4.91 |
| 見定める | 1 | 4.21 |
| 討ち果たす | 1 | 4.81 |
| 竹の皮 | 1 | 6.19 |
| 長ける | 1 | 3.91 |
| ジャンジャン | 1 | 5.66 |
| 濃緑 | 1 | 5.16 |
| 翌々日 | 1 | 5.10 |
| 厚さ | 1 | 4.43 |
| しなやか | 1 | 4.30 |
| 跨る | 1 | 4.08 |
| 原石 | 1 | 4.52 |
| 寺 | 1 | 4.14 |
| 長髪 | 1 | 4.27 |
| 雲の上 | 1 | 4.70 |
| がけ崩れ | 1 | 6.18 |
| 滅亡 | 1 | 4.14 |
| 堪ったもんじゃない | 1 | 4.97 |
| 生活用品 | 1 | 5.02 |
| 反って | 1 | 5.45 |
| 飛び付く | 1 | 4.87 |
| この世 | 1 | 3.50 |
| 同行者 | 1 | 4.34 |
| ごく稀 | 1 | 5.21 |
| 怖い顔 | 1 | 4.38 |
| 知人 | 1 | 4.21 |
| 裏打ち | 1 | 4.84 |
| 延期 | 1 | 4.63 |
| 植える | 1 | 3.99 |
| 来訪 | 1 | 4.06 |
| へ理屈 | 1 | 6.28 |
| 食器類 | 1 | 5.24 |
| 暴力的 | 1 | 4.46 |
| 女性らしい | 1 | 4.61 |
| カンテラ | 1 | 4.66 |
| 肩を落とす | 1 | 4.28 |
| 解す | 1 | 4.28 |
| 五十代 | 1 | 5.11 |
| 一緒になる | 1 | 4.87 |
| 温存 | 1 | 4.23 |
| 不祥事 | 1 | 4.82 |
| 分かれ道 | 1 | 4.65 |
| ツノ | 1 | 4.96 |
| 何処でも | 1 | 4.08 |
| 双子 | 1 | 3.69 |
| 今更ながら | 1 | 4.17 |
| 猛虎 | 1 | 4.12 |
| 阻害 | 1 | 3.91 |
| 峰 | 1 | 4.12 |
| 一辺 | 1 | 5.00 |
| 下手に出る | 1 | 5.35 |
| 火の玉 | 1 | 4.19 |
| 済まぬ | 1 | 4.29 |
| すまん | 1 | 3.60 |
| 先週 | 1 | 4.47 |
| 遠のく | 1 | 4.38 |
| クスノキ | 1 | 5.09 |
| 一着 | 1 | 4.68 |
| 居残る | 1 | 4.60 |
| 浮き上がる | 1 | 4.22 |
| 手押し車 | 1 | 5.51 |
| 女中 | 1 | 4.42 |
| 勝るとも劣らぬ | 1 | 5.44 |
| 取り止め | 1 | 5.17 |
| 目論見 | 1 | 4.21 |
| 騎乗 | 1 | 3.77 |
| 原本 | 1 | 5.12 |
| 旅人 | 1 | 3.96 |
| 都市部 | 1 | 4.68 |
| 柄物 | 1 | 6.13 |
| 純情 | 1 | 4.76 |
| ワーム | 1 | 4.47 |
| 精通 | 1 | 4.49 |
| 連れ去る | 1 | 4.18 |
| 得策 | 1 | 4.35 |
| 二十年 | 1 | 4.25 |
| 威圧感 | 1 | 3.89 |
| 何れにしても | 1 | 4.36 |
| 労働力 | 1 | 4.49 |
| 関係者 | 1 | 3.56 |
| 将来有望 | 1 | 4.69 |
| 滅茶苦茶 | 1 | 3.68 |
| 塵 | 1 | 3.82 |
| プラチナ | 1 | 4.40 |
| 一人芝居 | 1 | 5.65 |
| そっちのけ | 1 | 4.75 |
| 正反対 | 1 | 4.19 |
| 急造 | 1 | 4.85 |
| 硬貨 | 1 | 4.31 |
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